I put dawnguard at the beginning of my load order (before it was at the end) it seems to have worked (for now)

I have managed it to work but I stilll experience constant crashes , ctds and missing textures for the fire logs ....

Just adding my voice to the rest. Using "Unofficial" patch v1.1 and Beth HD Textures, nothing else. CTD every half hour or so. That's unfortunate since 1.6 and 1.7 were rock solid for me.

I seen more than one thread with an issue with Dawnguard Russian version. The missing textures for the fire logs has been around since the beginning. I have windows 64 bit version and I wonder that the 32 bit version is the cause of the CTDs.