Openshot crashes when exporting video

Every time I try to export a mp4 from openshot, it crashes on me. My project is very simple and only has an MP3 file for audio and some PNG images for the video in a slideshow format. I ran openshot from the command line and got these errors:

A new frmMain has been created
on_mnuMakeMovie1_activate called with self.mnuMakeMovie
on_tlbMakeMovie_clicked called with self.mnuMakeMovie
on_cboProjectType_changed
on_cboExportTo_changed
on_cboProjectType_changed
on_btnExportVideo_clicked
[mp3 @ 0x9ca0fb0]mdb:511, lastbuf:0 skipping granule 0
    Last message repeated 1 times
[mp3 @ 0x9ca0fb0]mdb:511, lastbuf:0 skipping granule 1
    Last message repeated 1 times
[mp3 @ 0x9cc5650]mdb:511, lastbuf:0 skipping granule 0
    Last message repeated 1 times
[mp3 @ 0x9cc5650]mdb:511, lastbuf:0 skipping granule 1
    Last message repeated 1 times
[mp3 @ 0x9dbc150]mdb:511, lastbuf:0 skipping granule 0
    Last message repeated 1 times
[mp3 @ 0x9dbc150]mdb:511, lastbuf:0 skipping granule 1
    Last message repeated 1 times
[mp3 @ 0x9de07f0]mdb:511, lastbuf:0 skipping granule 0
    Last message repeated 1 times
[mp3 @ 0x9de07f0]mdb:511, lastbuf:0 skipping granule 1
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.
    Last message repeated 1 times
[mp4 @ 0x932ba60]track 1: codec frame size is not set
Floating point exception