BSOD During Upgrade From Vista Ultimate To Win 7 Ultimate

I've tried to upgrade from Vista Ultimate 32 bit to 7 Ultimate 32 bit numerous times now, all with the same result: a BSOD during the install process, which I get during (what I think is) the final step called "Transferring files, settings and programs."

The installation compatibility test warns me about my Nvidia drivers, which I've attempted to both remove and upgrade to the latest version, but that doesn't seem to make a difference (I still get the warning during the compatibility check, and I still get the blue screen). I'm not sure that's even the problem, either. I can't (easily) remove/replace the video card, since my mobo doesn't have onboard video, so I'd hopefully be able to avoid having to do that.

The error in the blue screen is a nebulous "REFERENCE_BY_POINTER" message. The technical information is "STOP: 0x00000018 (0x00000000, 0x86478030, 0x00000002, 0xFFFFFFFF)."

As a zip file, I've attached the setup log, error log, compatibility report, and what I think is the setup dump file, all of which I found in C:$WINDOWS.~BTSourcesPanther (I believe that's the right place to look). The logs complain about BthMig problems, which I think has something to do with bluetooth, but I don't have any bluetooth peripherals. I've uninstalled things that I thought might have some bluetooth things in it, like MS Intellitype (maybe a stretch), but again, no difference.

System specs: AMD Athlon 64 X2 6000+, on an Asus M2N SLI Deluxe, with 4 GB of ram, and an Nvidia GeForce 8800 GT. The hard drive I'm installing (upgrading) on has about 100 GB free.