Open Shot Crashes while exporting mp4(h.264)

I have a very simple projekt: One Clip imported (HD 1280x720 at 60fps from Sanyo HD1000 Camcorder). Exporting this Projekt to Theora works well. Exporting it to MP4 (HDV 720 60p) h.264 crashes with floating point exception:

on_mnuMakeMovie1_activate called with self.mnuMakeMovie
on_tlbMakeMovie_clicked called with self.mnuMakeMovie
on_cboProjectType_changed
on_cboExportTo_changed
on_btnExportVideo_clicked
consumer_avformat.c: audio codec libfaac unrecognised - ignoring
consumer_avformat.c: video codec libx264 unrecognised - ignoring
consumer_avformat.c: Unable to encode audio - disabling audio output.
[mp4 @ 0x929b3d0]track 1: codec frame size is not set
Floating point exception

Plattform is Ubuntu 9.10 32Bit, OpenShot Version 1.0.0