Cannot open or uninstall Trados 2009 (Object reference not set to an instance of an object)
Thread poster: Bruno Depascale

Bruno Depascale  Identity Verified
Local time: 02:06
Member (2009)
English to Italian
+ ...
Oct 1, 2011

Hi everybody,
I have recently come up with this error message when I try opening Trados 2009:

"Object reference not set to an instance of an object"

The contents of the error message are as follows:

Object reference not set to an instance of an object.
System.NullReferenceException, mscorlib, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089

at Sdl.Desktop.Platform.CommandBars.ActionInfoCollection.get_Item(String id)
at Sdl.Desktop.Platform.Implementation.CommandBars.ActionService.GetAction(String id)
at Sdl.Desktop.Platform.Implementation.CommandBars.AbstractCommandBar.CreateCommandBarAction(String actionId)
at Sdl.Desktop.Platform.Implementation.CommandBars.FirstMenuInitializer.CreateItems(IMenu mainMenu)
at Sdl.Desktop.Platform.Implementation.CommandBars.FirstMenuInitializer..ctor(IMenu mainMenu)
at Sdl.Desktop.Platform.Implementation.StudioWindow.Init()
at Sdl.Desktop.Platform.Implementation.Studio.CreateWindowInternal(Boolean setActive)
at Sdl.Desktop.Platform.Implementation.Studio.Run()
at Sdl.TranslationStudio.Application.Launcher.RunApplication()

SDL Trados Studio
Microsoft Windows XP Professional
Service Pack 3
2276844 MB

I have also tried uninstalling trados, but I get an error message that says (my translation): impossible opening the patch package. Verify that this package exist or contact the sofware developer to verify that the patch package of windows installer is valid.

By the way, I had this problem also with trados 2011, but, after removing and reinstalling it, the problem with trados 2011 disappeared. Now it remains only for trados 2009, given the fact that I cannot remove it from my pc.

I have seen that maybe a registry key is damaged, but don't know such a key (

Hope somebody will help me.
Thank you,

[Edited at 2011-10-01 07:12 GMT]

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FSCDC  Identity Verified
English to Dutch
+ ...
Same problem with Multiterm Widget Oct 1, 2011

I have the same problem with the multiterm widget...

So I am glad to know I am not the only one. I could us some help with this too after all.

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SDL Community  Identity Verified
United Kingdom
Local time: 02:06
Try deleting these files and restarting Oct 1, 2011


For Studio 2009 can you try deleting the following files in C:\Documents and Settings\<username>\Application Data\SDL\SDL Trados Studio\ and restart. If you are using Vista it will be C:\Users\<username>\AppData\Roaming\SDL\SDL Trados Studio\\


They will be recreated and it may help.

For the multiterm widget try deleting this file and restarting:

c:\Users\<username>\AppData\Roaming\SDL\SDL MultiTerm\WidgetSettings.xml


C:\Documents and Settings\<username>\Application Data\SDL\SDL MultiTerm\WidgetSettings.xml



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