Please start a new thread for a new question rather than replying to an old one.
Also, please do some research before asking a question. Your answer is the very first item on the CGenFF FAQ:
http://dogmans.umaryland.edu/~kenno/cgenff/faq.html#compile
Yes, you can use CGenFF with c35, but you have to recompile with the CGENFF flag.
