Hey, this is my first post on these forums so be merciful if this has already been said but I was unable to find an answer anywhere so far. I have (seemingly) installed FCOM successfully and used Wrye bash and all that but when I leave the sewers in the starting area the game immediately freezes. I have installed the latest patches for F, C, O, and M, and the official patch. Does anyone have any idea what could be going wrong?

http://sites.google.com/site/oblivionpoinfo/finishinstall/loadorder There are very few troubleshooting-type mod questions that do not require your load order.

Edit: Please post your LO with Wrye Bash.

Most likely you need to rename the MMM.bsa to "FCOM_Convergence_Mart'sMonsterMod.bsa"

Crashing right outside the sewers is common if you forget to do that.

Did Showler's recommendation take care of your problem?

Funny how often people post with "OMGWTF SOCRITICAL MUSTKNOWNOW!!!!!!11111" questions and then aren't heard from again for days... or ever.

Not that this OP was that dramatic, but you do see it a lot.

...still gotta try to help...