Windows 7 Beta in Virtual PC 2007 - BSOD in Fs_Rec.sys after adding VM Additions

EDIT: UPDATE: SP1 fixes this!  Yay!!!

Others seem to have run it with no problems, and I installed it and ran fine (installed the update as well, even though there wouldn't be any mp3 files on that VM).  However, attempting to install the VM Additions (VPC resulted in a busted driver.


Bonus points if you happened to notice that incorrect use of "it's" instead of "its" in the highlighted error message.

I'm not the only one hitting it, at least... but as I type this, it's the only hit by my search.

Since others at least claim to have it working under VPC 2007 fine, I'm not sure what's different about ours (host OS for me is up-to-date Vista), but for now I'm having to stick without VM Additions (System Restore worked great! :), which is pretty painful.

Since I have to System Restore in order to get back to bootable, I'm guessing the relevant memory dump / WER data isn't getting sent, but I haven't dug into that as of yet.