The "beep" usually means the DCG install has some issue. Try running DCG and re-checking the auto-generation mode toggle. Also, make sure that you have a Data folder and a Masters folder in your DCG folder (and files in each). I don't think it's very common these days, but some old unzipping options dumped everything into the main folder. Finally, check that the DCG folders and the IL2 folders are not "read only".
Hopefully one of those issues will solve it. If not, let me know and I'll try to dig up some other causes.