System cannot find specified file; translation memory no longer working.

This morning I ran Avast Cleanup Premium on my laptop and since then my TM seems to have stopped working. When I tried to save a translated file to Word I received the error message System cannot find specified file. Following that, I attempted to reload the project to Trados, confident that the file would be automatically translated from the TM. This hasn't happened, and when I open the original project my completed translation from before is also not there.

Please help!