I'm not aware of anything that's changed recently that would cause this problem.
If it happens again, can you check the SB code folder before reinstalling. I'm wondering if something is deleting the code files.
To check the code folder:
Instead of the "databases" folder click through to the "Extensions" folder, then "edacconmaakjimmfgnblocblbcdcpbko", then "3.2.4_0". There should be 13 items (folders, .html files, etc) in this folder. If you then click through to the "js" folder, there should be 19 items in there.
Hans