Sdl.Desktop.Platform.CommandBars.IActionService could not be started - After installing a PlugIn from the AppStore (Merge and split XLIFFs), my Trados Studio 2021 doesn't start again showing the error message above

Question

Hello, 
 I recently wanted to try the PlugIn named above, and after installing this PlugIn my Trados Studio 2021 didn't start again. I already tried the workarounds mentioned in the forum, and renamed the PlugIn folder. After several attempts and with the help of an IT specialist only, I finally managed to at least start Studio again for using it. But now, I have the problem that all PlugIns previously installed are not available anymore. I need at least the PlugIn for converting Transit files to edit them in Studio. Can you help me out to reset my software to the initial state again? 
 Thank you for your support! 
 Susanne

Oana Nagy · Answer

Hi Susanne Surblys Did you try both suggestions from this article: https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0032269 
 Will gladly offer additional support if you are still struggling 
 Lyds

Trados Studio > 1. Trados Studio

Sdl.Desktop.Platform.CommandBars.IActionService could not be started - After installing a PlugIn from the AppStore (Merge and split XLIFFs), my Trados Studio 2021 doesn't start again showing the error message above