for all you playing with CTD's, OOS's, and various other peculiar errors, especially the bugs or frequencies of occurence, that seem to be rather isolated, and seem to have sprouted up with the move to BtS.
i have 2 copies of civ4 vanilla one works fine with anything below, i believe, version 1.63,you can even install warlords and it appears to run just fine, flawless from what i can see(so atleast whatever version warlords requires).
twice now i've tried to patch above this version, once to install BTS, in both cases, the patches are very troublesome to install and you get some odd behavior, such as almost constant oos's. the same downloads can be applied to the second copy of civ4 vanilla(so its not a crc thing from downloading) without any difficulties.
most of you out there know that some bad disks made it out, my point, for what its worth, is that some might work just fine up to a point, mine does anyway, which is very frustruting, and very strange as well.
For those of you haven't already (cause its not my first thought and i pretty much strictly play ffh now, not bts or vanilla) you might want to see if you can even play BtS or vanilla without these problems.
*edited to make it a little easier to read