f4vpp fails on ubuntu server 64bit

when i run f4vpp on ubuntu 64bit (11.10)  , it has such error .

and i have installed the ia32-libs package .

"

f4vpp -i 1.f4v o out.f4v.f4vpp

The conversion process starts...

f4vpp: ../../../../vendors/boost_1_33_1/include/boost/shared_ptr.hpp:253: T* boost::shared_ptr<T>::operator->() const [with T = fms::mp4::TrackBox]: Assertion `px != 0' failed.

Aborted

"

is there anyone knows this ? or where can i get the f4vpp source code to compile ?