The code to insert a colon in front of ELSE during the line crunch should be easy enough.  It's probably only 3 or 4 instructions.  The code shouldn't crash if there isn't a colon, it should issue s syntax error, so I'll have to fix that as well.  I based my code on Color BASIC, so there is a chance that would crash just as spectacularly.

I don't have time to look at this at the moment, but when I do I'll post fixes and maybe start working through the other optimizations.  All these fixes are eating up ROM space so I'm not sure what will still fit.