Error when opening project files - Fragment Matches / Key not found / Argument 'viewPart Reference' cannot be null

Hello,

  I would like to ask for you assistance with a problem I am experiencing when trying to open saved project files (both in progress and completed).

When clicking on the file I would like to open, the following messages appear

1. Unexpected exception when initializing viewpart Fragment Matches

2. Key not found 'XXXXX' Nazwa parametru: key

3. Argument 'viewPart Reference' cannot be null. Nazwa parametru: viewPart Reference. 

I have also tried opening a new file, but Trados shuts down once I've completed the language settings.

I am aware that this issue has been addressed before, but if someone could provide guidence for someone with basic computer skills, I'd appreciate it!

emoji