do you mind posting up some screenshots so we can see what you mean. If you do take some screenshots, take one of your WW1_source folder, one of your games tab on Steam, and lastly one of what happens when you open WW1 source.
Unless someone else has a better idea, this is all i can think of to try to help you. =]
If you don't know how to take a screenshot~
http://www.wikihow.com/Take-a-Screensho ... ft-Windows Or if you have a mac
http://www.wikihow.com/Take-a-Screenshot-in-Mac-OS-XAnd if you don't know how to put them on here, just post here and ask. And i or someone else will help you.