This week I faced an interesting problem on a Windows 7 Development PC. I have run MakeLog (http://commondata.codeplex.com/releases/view/13206) sucessfully on my PC but my colleague could not run it sucessfully. Both of us are local administrators, so what I could do on my PC, he should have been able to do.

The cure was to turn UAC completely off and re-boot. Once re-booted, the installation ran without incident. While I would never suggest turning off UAC normally, on development PCs, it is a liability as it stops many normal operations and occasionaly without giving a prompt.