TRADOS PowerPoint Filter 2.0.0.0

Error message:

Failed to retrieve tag toolbar settings for plugin file format: Filter definition not found: TRADOS PowerPoint Filter 2.0.0.0
Possible solution:
Open the ttx file with JEdit or NotePad. Replace "PowerPoint Filter 2.0.0.0" for "PowerPoint Filter 1.0.0.0" (or viceversa). Remember to change it back before delivering the files or your client or PM won't be able to clean it.

Can you please explain to me how exactly do I do this?

I have exactly the same problem, and I cannot activate the spellchecker!

Thanks!