Hey Mosaic,
I downloaded problemcode.asm from your link, to the working directory of the IDE.
Ctrl A to open the assmbler, and then opened the file from the IDE working directory. Assembly took about 6-7 seconds on an XP, SP2, 2.8G clock, 1G ram, IDE v6.85
compile resulted in 283 errors, I d/loaded the .asm 3 times, always result in 283 errors when compiled.
duplicate labels line 0355, etc
unrecognized instructions all throughout like:
skpnz, skpz, skpc, skpnc
But I didn't get the permission 70 error and have the IDE crash, which is a locked file access error.
What is your version? Are you using the trial version, or an unsactioned copy? Are you monitoring your memory and drive available sizes?