Due to human error, the tarball released for LibQApt and Muon 1.9.95 was actually a snapshot from git master (2.1 pre-alpha stuff). This was never meant for public consumption. The 1.9.97 (2.0 RC2) release consists of RC1, but with a proper tarball. Packages will soon be made available in the QApt Experimental PPA for Kubuntu 12.10, and packages for the development version of Kubuntu 13.04 will be available after Kubuntu 13.04 beta is released.
I’m terribly sorry for the inconvenience, and am still kicking myself for allowing that to happen.