Script length issue?

I'm doing an autoinstall under SuSE 9.2, and I have one reasonably long script (~100 or so lines). I'm finding that under the autoinstaller, it is terminating after line 68 (no matter what that line is). If I run the very same script in a normal BASH shell, it runs fine. Is there perhaps a bug in the autoinstaller that could cause this? Or have I run into something else?