Firekorn - Thank you very much for your reply. I was able via your help to find the correct directries. Apparent they are different based upon the method of RockSmith purchase. I did purchase Cherub Rock but apparently it didn't install into my DLC until this morning, because I could not see the CDLS until then.So I have that part now working. Strangely every once in a while when I launch RockSmith and the Debug Window pops up (from the .dll) I get a requestor that says the program is corrupt. Sometimes the next launch it will work and sometimes I have to remove the .dll and then launch RockSmith, close it, restore the .dll and it works again. Not sure whats happening there, maybe Kaspersky. Also if I plug in a USB drive in any USB Port the realtone cable is no longer recognized. So there is some conflict there, but I can work around that. Again thanks for your help :)