When I renamed the 8bi files, I could do ACR editing, but when I selected open for the file to transfer to PS, it would not transfer.
I believe the ACR is not just a separate 8bi file. I think it is embedded into Bridge somehow.
Apparently, I ran the patch software when I installed the 7.2 beta in August. My patch log shows that. So now when I try to run the 7.2 patch software, it aborts because it sees that a 7.2 version is already installed.