So, the best way to find squee-of-doom errors is to use a debugger, here are some old instructions for how: Running a debugger
If you can’t set up a debugger, the second easiest way is to figure out exactly what causes the crash, then have someone who does have a debugger try it.
Even if you don’t have a debugger, if you know exactly which key combination causes it, then it narrows down the amount of code we have to look through to search for the problem.
Also, if you suspect that the compiler is part of the problem, then please try an older version and see if it has the same problem or not.