> #1: Failed with "Wrong type argument: integerp, append" > #2: Failed with "Invalid function: 1" > #3: Failed with "Symbol's value as variable is void: > compilation-old-error-list" > #4: Failed with "Wrong type argument: integer-or-char-p, t" > #5: Crash, see attached bt.txt. > #6: Success! > > I would appreciate if someone could have a look at this. Let > me know if you need more info and I'll try to provide. Yuck. Your backtrace is clear but unfortunately these bytecode problems are hard to diagnose. What would help is [1] Before opening the file the first time, put a breakpoint at signal_1(). [2] When you get the first failure, get both a C and lisp backtrace and send them. You can get a Lisp backtrace by calling debug_backtrace().