Just started BG1 for the first time today and have had 3 crashes like this in starting town.
Running Win7/64, widescreen mod (v3.05) and fix-beregost patch. No GUI mod.

After the first crash I save before entering a building but was wondering if anybody ever got to the bottom of this?

I haven't played the game in a while, but as far as I remember I was never able to fix it.

However accesspanels fix above looks to be worth a short

Hmm, I never had any previous saved games.

I haven't done any alt-tabbing and I'm still getting the CTD in the starting town. It just happened to me when I was fighting the rats. I do have the widescreen mod installed as well, but no other mods. Running Windows 8.

I imagine there isn't much GOG can do, but it's a bummer to think I may have to save my game every 5 minutes.

Mm.. i am in the end stage of the game and now i can't enter any building with out the game crashing. so sad. i do will try to uninstall the mod, but it worked fantastic so far just not now.
I fear i can not finish this game.

the uninstall an reinstall of the game without any mod works. now i can finish this games. yeah :)

of interest:
http://www.gog.com/forum/planescape_torment/crash_with_widescreen_mod_possible_solution/post8

( make sure you backup your save'd games before switching between different version of the widescreen mod )

True. In my case the saves were damaged. The good was that i had a backup. But i noticed that the mod also crashes the game sometimes.

Were you ever able to enter those buildings with an old save?

You are questioning a three year old reply in a six year old thread?! Why?

Because it was relevant to an issue I was having.

This thread is dead and buried. Don't necro threads, make your own and state your problem. There are few things worse than necro'ing dead threads in forums.

No

Three months later. Twit.