tpt.drawline isn't really the most serious thing you could have broken, should be a quick fix anyway.

I updated the script manager once and broke the updater. That was bad ... I didn't find out until like a week (or was it a month) later when I tried doing the next update. Make sure you never break your updater because it is important :P.

My mod hasn't had any update issues like that though, except for maybe a few times where the next version was incompatible with a computer when the old one was (dunno if this really happened, but it probably would have on some ancient computers)