Error in the log:

System.IO.FileNotFoundException: The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
at Quest.RM4SP.AllBackups.Presenters.View.BackupListCtrlController.AddHistoryFromFile(String fileName)
at Quest.RM4SP.AllBackups.BackupListCtrl.toolStripButtonAdd_Click(Object sender, EventArgs e)

It looks like the issue is not related to a product configuration. It's most likely related to .Net Framework: Exception from HRESULT: 0x80070002

Event Viewer should have more detailed error.

Try reinstalling .Net Framework. Recovery Manager requires .Net Frameworks 3.5

Try installing Recovery Manager on a different machine.

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