Can you elaborate on that? I already have a couple of cdlc installed and used. But now can't find the new one I downloaded (http://customsforge.com/page/customsforge_rs_2014_cdlc.html/_/pc-enabled-rs-2014-cdlc/snow-hey-oh-r35004#fast_reply) //edit RocksmithToTab is able to convert it to gp5, so my guess is, the file is valid. //edit2 Fixed it. The problem was the AppId which was set to a song I don't own. Edited it with CFSM.