"Unable to find the specific file" when trying to update the Termbase.

Hello guys,

Whenever I want to update a translation memory, I get the error message "Unable to find the specific file". I tried reset my SDL (as described in https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0033669) and tried this solution: https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0034935 (where I get the error message that the path is invalid). I use Dropbox to be able to work from home and from the office. Maybe there's some access issue. On my office PC it works, but not on my laptop. I use the latest version of Trados Studio 2021.

Any idea? :)

Thanks in advance!
-Lisa

Log:
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Update translation memories started. (23.02.2021 08:39:59)
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Working folder: \\Mac\Home\Dropbox\Mein Mac (MacBook-Pro.local)\Downloads\ProjectName\Tm\de-DE


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Backup Translation Memory (23.02.2021 08:39:59)
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Backup location: \\Mac\Home\Dropbox\Mein Mac (MacBook-Pro.local)\Downloads\ProjectName\Tm\de-DE\TMName.sdltm.000.bak

Process failed (23.02.2021 08:39:59)
System.IO.IOException: Der angegebene Pfadname ist ungültig.

   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite, Boolean checkHost)
   at System.IO.FileInfo.CopyTo(String destFileName, Boolean overwrite)
   at Sdl.TranslationStudio.Common.Helpers.FileService.CopyTo(String existingFilePath, String newFilePath, Boolean overwrite)
   at Sdl.TranslationStudio.Common.TranslationMemory.TranslationMemoryAutomation.Jobs.BackupTranslationMemoryJobRequest.Execute(IJobExecutionContext context)

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Update translation memories finished. (23.02.2021 08:39:59)
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