splosher

Hi

Can anyone help? Just rebuilt PC with a Q6600 from a E6600 and swapped motherboard from a Evga 650i Ultra to a Asus P5N32-E SLI but still using BFG 8800 GTS 512mb OC. I have Vista 64 Ultimate installed and cannot install the beta 169.44's although 2 days ago i could do using the same Vista!

The error is:
Fatal error
You are running a 32 bit version of Nvidia uninstaller on a 64 bit system (Binary type I386).
Wrong version of installer.

Then it says:
Setup detected that the operating system in use is not Windows Vista [64 bit]. This setup program are designed to run only on Windows Vista [64 bit]. The installation will be terminated.

Now, i have UAC turned off - could this be it? The drivers i am using are the 169.25 internationals downloaded from UK siteand the 169.44 beta is downloaded from the same Uk site.
Any help would be appreciated.

Thanks