[woofiedog]

Azdack... I have IL-2 on my rig's regular hard drive x2 with a fresh copy non modded and a modded version as a backup and also the same x2 on a external hard drive which I use for playing. Again you might want to go over the installation steps of UD program and retry following UD installation steps closely. Here is a link to the UD setup page. http://uberdemon.sushicereal.com/index2.html

Also I run the UD 5.0.32 the first program to download for a quick mission before I install the UD 5.0.44. I hope you get the problem straighten out as your really going to enjoy the updated version.