I've been playing this game for 10 years now and never seen this. I just shut down Sims 2 quite normally. No crash, nothing. Perfectly normal game. I went to delete groups.cache and accessories.cache from my game folder and found a file called TSWebServer.ini in my Sims2 folder. I've got all Eps and SPs. I'm not running the noCD crack, I haven't added anything new since M&G came out. I did a reinstall a few days ago, but nothing else outstanding. Just the usual game, albeit with a lot less CC than I usually use. So I'm lost.
What the heck is it? I put it on my desktop and am about to try starting the game to see what happens.
If it's an .ini file can't you just open it in Notepad and paste the contents in a post so we actually have a fucking clue?