If you tried to import a project on version 0.9.3, you may have noticed that the right edge of a lot of the tile palette came out blank. Turns out this was a bug in SDL. (A couple months ago someone checked in a fix for one bug, but it ended up breaking something else.) I’ve patched the code and updated the 0.9.3 installer.
This error shouldn’t affect anything in TURBU other than project imports, so if you already have 0.9.3 and you’re not importing any projects, you probably don’t need to re-download and reinstall it.