See under my name where it says "curmugeonly hardware guy"? That's not a joke.
I still stand by everything I said. There is no reason to assume something not a U3 is a U3 and expect U3 drivers to work. (Who told you it would? That person must be confused. Did it somehow enumerate as a U3 in an old version of cgminer?) In the first post of this thread are download links for Windows executables of the proper software and also descriptions of command-line flags specific to the 2Pac driver. The things you need to solve the problems you're having.
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=Basic Q&A / Troubleshooting=
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Q. Can I run this cgminer build with the original Compac?
Yes. The original Compac will register with separate device name from the 2pac.
Q. How can I set a different frequency for the 2Pac vs the Compac?
cgminer will accept one or both parameters for the stick.
--gekko-compac-freq 200 --gekko-2pac-freq 150
I'll kindly answer questions that haven't been asked yet. I'll sarcastically answer questions that have been answered several times already. I'll ignore questions that have been answered so publicly and frequently that finding the answer should take a person who's gotten this far no more than 30 additional seconds of work to find it for himself. I won't do your homework for you.