Hi,
I'm having similar issues. The wheels does the HW calibration and stops at dead center. Then looking at the software and trying to see the input from the wheel in the calibration software - nothing happens. Same thing in LFS.
I have now tried 5.02 64bit version and 5.10 64bit version of the driver with the profile software.
The installation goes ok with no errors.
Also checked the device manager and when plugging the wheel to the computer it shows "G25 racing wheel" but after the driver is recognized the name changes to Logitech Racing wheel. Ok - I'm not worried yet but when I start the profiler the layout looks like I would be using a Logitech Formula Force EX so checked this from the registry (as you can see the PID and that tells you what wheel it sees) and it was referring to that wheel and not to the G25.
I have only one wheel and it is the G25. Works nicely on my PS3 and before on my old PC which had Win XP and Win Vista 64bit.
I Don't really want to revert back to Win XP or Vista..
Os: Windows 7 64bit - running in Parallels on Macbook Pro
Thank you already for your help!