I was playing around adding some new Actions.
Everything seemed to be fine until I tried adding an action for exporting a cover. For some reason I could not name that action, it would just stay blank. Every time I hit the Actions button, I got an error dialog. I tried exiting Mp3tag, deleting the actions manually, restarting but the error persisted. I fixed the problem by replacing everything with the backup (2.38l) on my flash drive. 
Anyway, I think this is the proper error log.
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Mp3tag v2.39m - 16.01.2008 - 17:06:26
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OS-Version: Windows XP Service Pack 3, v.3244 (Build 2600)
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Build: Jan 12 2008 13:35:48
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AppPath: 450.371.584 Bytes frei (C:\Portable Files\Mp3tag\)
DataPath: 450.371.584 Bytes frei (C:\Portable Files\Mp3tag\data\)
TempPath: 450.371.584 Bytes frei (C:\Users\Nighted\LOCALS~1\Temp\Mp3tag v2.39m\)
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CATCH
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File: .\mtactionsselectdlg.cpp
Line: 161
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CATCH
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File: .\mtactionsselectdlg.cpp
Line: 161
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