[SOLVED]Installing Panda3D on Ubuntu 12.04 Bheta

I’m using Fedora 19 and Panda 3D 1.8.1 but I have the same error,

ImportError: dynamic module does not define init function (initlibpandaexpress)

I have tried with 1.7.2, 1.8.0, .1.8.1 and the RPM but can’t install. Anybody can help please?