If you like the userenvlog from Windows XP, you may want to know how to get more information from the GPSVR service in Windows 2008/Visa/Win 7. If so then try this:
How to enable logging in the Gpsvc.log file To enable logging in the Gpsvc.log file, follow these steps. Click Start, click Run, type regedit, and then click OK.
These details can be found at the bottom of http://support.microsoft.com/kb/944043.
I needed a reboot before the log got created.
i can't type "0x30002" in the value. it won't take an x. is "30002" good enough?
yes, the 0x just lets you know that it is in hex :) sorry, I will edit the post and remove the 0x. Thanks for pointing that out :)
Is Reboot necessary to complete the whole procedure?
It appears that if you manually create the usermode folder, a reboot is not necessary.