Microsoft net exception when trying to open and reinstall Studio and Multiterm

Microsoft .NET Framework error dialog box showing an unhandled exception in a component of the application related to a missing 'Accessibility' file.

Dear all,

This morning upon opening Studio I received the following message. "unhandled exception in a component of the application ..." The details are posted below. I cannot open Studio or Multiterm without these messages appearing. I have tried to de-install and reinstall but the removal suite of products option does not work. SDL freshstart, although installed, stops worning shortly after I choose the files to be removed. I am at my wits end. This is the last in a long line of trados problems this week and I wonder if it may be to do with a failed install of the trial version of Studio 2019 (which I cannot now completely deinstall) Any thoughts?

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Details of the exception:
See the end of this message for more details on how to invoke
Just-In-Time (JIT) debugging instead of this dialog box.
************** Exception text **************
System.IO.FileNotFoundException: Unable to load the file or assembly 'Accessibility, Version = 4.0.0.0, Culture = neutral, PublicKeyToken = b03f5f7f11d50a3a 'neither one of its dependencies. The system can not find the specified file.
File name: 'Accessibility, Version = 4.0.0.0, Culture = neutral, PublicKeyToken = b03f5f7f11d50a3a'
in System.Windows.Forms.Control.OnHandleCreated (EventArgs e)
in System.Windows.Forms.Control.WmCreate (Message & m)
in System.Windows.Forms.Control.WndProc (Message & m)
in System.Windows.Forms.Control.ControlNativeWindow.OnMessage (Message & m)
in System.Windows.Forms.Control.ControlNativeWindow.WndProc (Message & m)
in System.Windows.Forms.NativeWindow.Callback (IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
AVS: The assembly link record is deactivated.
To enable the error log of the assembly link, set the registry value [HKLM \ Software \ Microsoft \ Fusion! EnableLog] (DWORD) to 1.
Note: there is a performance decrease associated with the assembly link error log.
To disable this feature, delete the registry value [HKLM \ Software \ Microsoft \ Fusion! EnableLog].
************** Assemblies loaded **************
mscorlib
Assembly version: 4.0.0.0
Win32 version: 4.7.3416.0 built by: NET472REL1LAST_B
Base code: file: /// C: /Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
------- ---------------------------------
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[edited by: Trados AI at 11:30 AM (GMT 0) on 4 Mar 2024]