I just started getting a 500 error when trying to save a slightly modified version of my index template. It is rebuilding ok, just without the changes I want to make. The other templates are saving normally, and there's nothing (other then the 500 error) in my error log, not even a "premature end of script headers". I tried linking it to a file, but that didn't solve the problem. And it can't be too large now, as I only added a line or two, and even trying to save the index template unchanged still gives me the 500 error. Any ideas?

Thanks,
Michelle