A very bad night. I’ve recently been blessed with this particular problem: iChat quitting seconds after launch.
Reinstall iChat: no luck.
Reinstall iChat, patch through Software Update to 10.4.3 : no luck.
Run Combo Updater as recommended after reinstalling iChat: no luck.
Only now Mail is broken too; all my messages are there, but there’s no text loading in the panels. I’m loathe to reinstall Mail – I’ve backed up the Mboxes just now, even though the GUI is broken, I’m guessing the data is OK. It’s 3 years of Mail I pretty much can’t bear to lose.
So right now, I have a 12″ Paperweight. I’m really, really low about this; no idea how to fix it, no time to reinstall it for a good couple of days. Terrified. Depressed.