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Hi, i am facing problem with UiPath.Forms activity. It was working but suddenly it is not totally blank in studio and assistant also. It just won’t load anything in Form Designer. I uninstalled the activity and installed it again but no difference at all.
It is not showing any error also.
what changed recently is: i changed the .nuget folder path from standard to out of Drive C. It started loading packages in the new .nuget folder
Not sure if it has something to do with that.

What could be the reason behind this?

Hello @Robott !

It seems that you have trouble getting an answer to your question in the first 24 hours.
Let us give you a few hints and helpful links.

First, make sure you browsed through our Forum FAQ Beginner’s Guide . It will teach you what should be included in your topic.

You can check out some of our resources directly, see below:

Always search first . It is the best way to quickly find your answer. Check out the icon for that.
Clicking the options button will let you set more specific topic search filters, i.e. only the ones with a solution.

Topic that contains most common solutions with example project files can be found here .

Read our official documentation where you can find a lot of information and instructions about each of our products:

Watch the videos on our official YouTube channel for more visual tutorials.

Meet us and our users on our Community Slack and ask your question there.

Hopefully this will let you easily find the solution/information you need. Once you have it, we would be happy if you could share your findings here and mark it as a solution. This will help other users find it in the future.

Thank you for helping us build our UiPath Community!

Cheers from your friendly
Forum_Staff

some logs

09:19:35.2752 => [ERROR] [UiPath.Studio.Analyzer] [7] System.IO.FileLoadException: The assembly 'Microsoft.Win32.SystemEvents, Version=6.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' has already loaded been loaded into this MetadataLoadContext.
   at System.Reflection.MetadataLoadContext.LoadFromStreamCore(Stream peStream)
   at UiPath.Studio.Analyzer.AssemblyLoading.DirectoryAssemblyLoader.GetAssemblies(String path, String fileFilter)
09:19:35.5455 => [ERROR] [UiPath.Studio.Analyzer] [7] System.IO.FileLoadException: The assembly 'System.Drawing.Common, Version=6.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' has already loaded been loaded into this MetadataLoadContext.
   at System.Reflection.MetadataLoadContext.LoadFromStreamCore(Stream peStream)
   at UiPath.Studio.Analyzer.AssemblyLoading.DirectoryAssemblyLoader.GetAssemblies(String path, String fileFilter)
09:19:36.0966 => [ERROR] [UiPath.Studio.Analyzer] [7] System.NotSupportedException: Unknown API registration: UiPath.Excel.Activities.Design.ApiRegistration.DesignersForPortableApiRegistration
   at UiPath.Excel.Activities.Design.ApiRegistration.StudioApiRegistry.GetApi[T]()
   at UiPath.Excel.Activities.Design.DesignerMetadata.AddBrowsableFalseAttribute(AttributeTableBuilder builder)
   at UiPath.Excel.Activities.Design.DesignerMetadata.Register()
   at UiPath.Studio.Analyzer.AssemblyLoading.AnalyzerAssemblyScanner.ScanAssembly(Assembly assemblyToScan, IEnumerable`1 contextAssemblies)
09:19:36.3750 => [ERROR] [UiPath.Studio.Analyzer] [7] Object reference not set to an instance of an object.
09:19:36.4313 => [ERROR] [UiPath.Studio.Analyzer] [7] BinAssemblyResolver: failed to resolve Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'. Das System kann die angegebene Datei nicht finden.
File name: 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'
   at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
   at System.Reflection.Assembly.Load(String assemblyString)
   at UiPath.Studio.App.Wrappers.AssemblyMethods.Load(String assemblyString)
   at UiPath.Studio.DataBaseServer.Shared.Services.BinAssemblyResolver.OnAssemblyResolve(Object sender, ResolveEventArgs args), HResult -2147024894
09:19:36.4313 => [ERROR] [UiPath.Studio.Analyzer] [7] BinAssemblyResolver: failed to resolve Microsoft.Management.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'. Das System kann die angegebene Datei nicht finden.
File name: 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'
   at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
   at System.Reflection.Assembly.Load(String assemblyString)
   at UiPath.Studio.App.Wrappers.AssemblyMethods.Load(String assemblyString)
   at UiPath.Studio.DataBaseServer.Shared.Services.BinAssemblyResolver.OnAssemblyResolve(Object sender, ResolveEventArgs args), HResult -2147024894
09:19:36.4313 => [ERROR] [UiPath.Studio.Analyzer] [7] System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Management.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Das System kann die angegebene Datei nicht finden.
File name: 'Microsoft.Management.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
   at System.Reflection.RuntimeAssembly.GetExportedTypes()
   at UiPath.Studio.Analyzer.AssemblyLoading.AnalyzerAssemblyScanner.ScanAssembly(Assembly assemblyToScan, IEnumerable`1 contextAssemblies)
09:19:36.4313 => [ERROR] [UiPath.Studio.Analyzer] [7] BinAssemblyResolver: failed to resolve Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'. Das System kann die angegebene Datei nicht finden.
File name: 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'
   at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
   at System.Reflection.Assembly.Load(String assemblyString)
   at UiPath.Studio.App.Wrappers.AssemblyMethods.Load(String assemblyString)
   at UiPath.Studio.DataBaseServer.Shared.Services.BinAssemblyResolver.OnAssemblyResolve(Object sender, ResolveEventArgs args), HResult -2147024894
09:19:36.4313 => [ERROR] [UiPath.Studio.Analyzer] [7] BinAssemblyResolver: failed to resolve Microsoft.Management.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'. Das System kann die angegebene Datei nicht finden.
File name: 'Microsoft.Management.Infrastructure, Culture=neutral, PublicKeyToken=null'
   at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
   at System.Reflection.Assembly.Load(String assemblyString)
   at UiPath.Studio.App.Wrappers.AssemblyMethods.Load(String assemblyString)
   at UiPath.Studio.DataBaseServer.Shared.Services.BinAssemblyResolver.OnAssemblyResolve(Object sender, ResolveEventArgs args), HResult -2147024894
09:19:36.4313 => [ERROR] [UiPath.Studio.Analyzer] [7] System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Management.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Das System kann die angegebene Datei nicht finden.
File name: 'Microsoft.Management.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
   at System.Reflection.RuntimeAssembly.GetExportedTypes()
   at UiPath.Studio.Analyzer.AssemblyLoading.AnalyzerAssemblyScanner.ScanAssembly(Assembly assemblyToScan, IEnumerable`1 contextAssemblies)
09:19:36.4842 => [ERROR] [UiPath.Studio.Analyzer] [7] Failed to resolve api registration type UiPath.Core.Activities.ApiRegistration.PortableApiRegistration in assembly UiPath.System.Activities or  UiPath.System.Activities.design
09:19:36.5029 => [ERROR] [UiPath.Studio.Analyzer] [7] Failed to resolve api registration type UiPath.Testing.Activities.Portable.PortableRegisterWorkflowDesignApi in assembly UiPath.Testing.Activities or  UiPath.Testing.Activities.design
09:19:37.0657 => [ERROR] [UiPath.Studio.Analyzer] [7] Object reference not set to an instance of an object.
09:19:37.1640 => [ERROR] [UiPath.Studio.Analyzer] [7] System.MissingMethodException: Cannot dynamically create an instance of type 'UiPath.Studio.Workflow.Shared.ActivitiesMetadata.ApiRegistrationAdapter'. Reason: No parameterless constructor defined.
   at System.RuntimeType.ActivatorCache..ctor(RuntimeType rt)
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean wrapExceptions)
   at System.Activator.CreateInstance(Type type, Boolean nonPublic, Boolean wrapExceptions)
   at UiPath.Studio.Analyzer.AssemblyLoading.AnalyzerAssemblyScanner.<>c__DisplayClass2_1.<ScanAssembly>b__2(IAnalyzerConfigurationService svc)
09:19:37.3025 => [ERROR] [UiPath.Studio.Analyzer] [7] System.UriFormatException: Invalid URI: Invalid port specified.
   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind, UriCreationOptions& creationOptions)
   at System.Uri..ctor(String uriString)
   at UiPath.UIAutomationNext.Activities.Design.Services.WindowService..cctor()
09:19:37.3613 => [ERROR] [UiPath.Studio.Analyzer] [7] BinAssemblyResolver: failed to resolve System.Runtime.Caching, Culture=neutral, PublicKeyToken=null: System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.Caching, Culture=neutral, PublicKeyToken=null'. Das System kann die angegebene Datei nicht finden.
File name: 'System.Runtime.Caching, Culture=neutral, PublicKeyToken=null'
   at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
   at System.Reflection.Assembly.Load(String assemblyString)
   at UiPath.Studio.App.Wrappers.AssemblyMethods.Load(String assemblyString)
   at UiPath.Studio.DataBaseServer.Shared.Services.BinAssemblyResolver.OnAssemblyResolve(Object sender, ResolveEventArgs args), HResult -2147024894
09:19:37.3613 => [ERROR] [UiPath.Studio.Analyzer] [7] BinAssemblyResolver: failed to resolve System.Runtime.Caching, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a: System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.Caching, Culture=neutral, PublicKeyToken=null'. Das System kann die angegebene Datei nicht finden.
File name: 'System.Runtime.Caching, Culture=neutral, PublicKeyToken=null'
   at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
   at System.Reflection.Assembly.Load(String assemblyString)
   at UiPath.Studio.App.Wrappers.AssemblyMethods.Load(String assemblyString)
   at UiPath.Studio.DataBaseServer.Shared.Services.BinAssemblyResolver.OnAssemblyResolve(Object sender, ResolveEventArgs args), HResult -2147024894
09:19:37.3684 => [ERROR] [UiPath.Studio.Analyzer] [7] System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
 ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.Caching, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. Das System kann die angegebene Datei nicht finden.
File name: 'System.Runtime.Caching, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
   at UiPath.ConnectionClient.ConnectionClient..ctor(IHttpConnectionServiceClient connectionServiceClient, ITelemetryClient telemetryClient)
   at UiPath.ConnectionClient.ConnectionClient..ctor(IAccessProvider accessProvider, ITelemetryClient telemetryClient)
   at UiPath.ConnectionClient.ConnectionClientBuilder.Build(IAccessProvider accessProvider)
   at UiPath.Mail.Activities.Design.DesignerMetadata.Initialize(Object api)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at UiPath.Studio.Analyzer.AssemblyLoading.AnalyzerAssemblyScanner.<>c__DisplayClass2_2.<ScanAssembly>b__3(IAnalyzerConfigurationService analyzerConfigurationService)
10:03:06.9452 => [ERROR] [UiPath.Studio.Analyzer.exe] [11] System.IO.FileLoadException: The assembly 'Microsoft.Win32.SystemEvents, Version=6.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' has already loaded been loaded into this MetadataLoadContext.
   at System.Reflection.MetadataLoadContext.LoadFromStreamCore(Stream peStream)
   at System.Reflection.MetadataLoadContext.LoadFromAssemblyPath(String assemblyPath)
   at UiPath.Studio.Analyzer.AssemblyLoading.DirectoryAssemblyLoader.GetAssemblies(String path, String fileFilter)
10:03:06.9452 => [ERROR] [UiPath.Studio.Analyzer.exe] [11] System.IO.FileLoadException: The assembly 'System.Drawing.Common, Version=6.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' has already loaded been loaded into this MetadataLoadContext.
   at System.Reflection.MetadataLoadContext.LoadFromStreamCore(Stream peStream)
   at System.Reflection.MetadataLoadContext.LoadFromAssemblyPath(String assemblyPath)
   at UiPath.Studio.Analyzer.AssemblyLoading.DirectoryAssemblyLoader.GetAssemblies(String path, String fileFilter)
10:03:08.5176 => [ERROR] [UiPath.Studio.Analyzer.exe] [11] System.NotSupportedException: Unknown API registration: UiPath.Excel.Activities.Design.ApiRegistration.DesignersForPortableApiRegistration
   at UiPath.Excel.Activities.Design.ApiRegistration.StudioApiRegistry.GetApi[T]()
   at UiPath.Excel.Activities.Design.DesignerMetadata.AddBrowsableFalseAttribute(AttributeTableBuilder builder)
   at UiPath.Excel.Activities.Design.DesignerMetadata.Register()
   at UiPath.Studio.Analyzer.AssemblyLoading.AnalyzerAssemblyScanner.ScanAssembly(Assembly assemblyToScan, IEnumerable`1 contextAssemblies)
10:03:08.5516 => [ERROR] [UiPath.Studio.Analyzer.exe] [11] Object reference not set to an instance of an object.
10:03:08.9008 => [ERROR] [UiPath.Studio.Analyzer.exe] [11] Object reference not set to an instance of an object.
10:03:09.0358 => [ERROR] [UiPath.Studio.Analyzer.exe] [11] System.MissingMethodException: No parameterless constructor defined for this object.
   at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
   at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
   at System.Activator.CreateInstance(Type type, Boolean nonPublic)
   at System.Activator.CreateInstance(Type type)
   at UiPath.Studio.Analyzer.AssemblyLoading.AnalyzerAssemblyScanner.<>c__DisplayClass2_1.<ScanAssembly>b__2(IAnalyzerConfigurationService svc)
              also i am not able to publish a library to orchestrator… having folling compliation error
22.10.3+Branch.master.Sha.def2351dc828ccfbcddb6e9e07c9cf71b5bf55da
Compilation failed or was cancelled.
An unexpected error occurred during the library compilation process:

Assembly compilation returned the following errors:
The type “ILocalResource” is defined in an unreferenced assembly. Add a reference to the assembly “UiPath.Platform, Version=22.10.2.0, Culture=neutral, PublicKeyToken=null”.
The type “IResource” is defined in an unreferenced assembly. Add a reference to the assembly “UiPath.Platform, Version=22.10.2.0, Culture=neutral, PublicKeyToken=null”.
The type “ILocalResource” is defined in an unreferenced assembly. Add a reference to the assembly “UiPath.Platform, Version=22.10.2.0, Culture=neutral, PublicKeyToken=null”.
“SortDataTable.Order” is deprecated.
“SortingOrder” is deprecated.
“IResource” type is defined in an unreferenced assembly. Add a reference to the assembly “UiPath.Platform, Version=22.10.2.0, Culture=neutral, PublicKeyToken=null”.
It is assumed that the assembly reference “mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” used by “Microsoft.Exchange.WebServices” matches “mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” of “mscorlib”. You may need to provide a runtime policy.
The assembly reference “mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” used by “Microsoft.Exchange.WebServices” is assumed to match “mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” of “mscorlib”. You may need to provide a runtime policy.
              Something is seriously wrong with my studio.
Bad IL format. The format of the file ‘\ounas\Documents\UiPath.nuget\UiPath.cefsharpbundle.netcore\1.8.0\lib/net5.0-windows7.0/Ijwhost.dll’ is invalid.

Bad IL format. The format of the file ‘\ounas\Documents\UiPath.nuget\UiPath.cefsharpbundle.netcore\1.8.0\lib/net5.0-windows7.0/chrome_elf.dll’ is invalid.