This is an interesting idea, but I can see a problem with it: newer monks are more apt to leave out crucial information, and while they're also more likely to post a whole script (not being so confident in their abilities to localize the problem), if they *don't* post the whole script -- and do so verbatim -- the line number they give in their error message many not correspond to the one listed in their posted code. So I'm not sure that generating line #'s is going to be that helpful.

Still, it might be nice to have as an option for those times where it would help.