Good news LimeDude (and other Mac Classic users)! We found a way to fix all the bugs caused by Mac Classic's buggy JIT (Just-In-Time compiling) option. This means many many bugs will no longer occur.
The bugs were happening on Mac Classic a LOT! We've received a total of about 28,000 (!!!) bug reports from these problems. (The most being 2554 reports with 3.6.6, 22403 reports with 3.5.8 and 1523 reports with 3.5.7.)
It'll be great to finally get rid of these annoying errors.