ffmpeg2theora-0.24.exe broke when trying to convert an H264 full HD

I just tried to convert using the following command string:

ffmpeg2theora-0.24.exe MVI_2231.MOV

That's the output before it breaks:

--------- cut here ---------
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MVI_2231.MOV':
  Duration: 00:00:39.73, start: 0.000000, bitrate: 36512 kb/s
    Stream #0.0(eng): Video: h264, yuv420p, 1920x1080, 30 tbr, 30 tbn, 60 tbc
    Stream #0.1(eng): Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
  Resize: 1920x1080
--------- cut here ---------

I'm working under Vista ( :-( ) SP1 (last patches till half june 2009)
I'm ready to supply the MOV (177MBytes!!), but I tried lot of MOVs H264 Full HD generated from my Canon SX1 and everyone breaks ffmpeg2theora-0.24.exe in the same way.
If U need it just tell me. I can generate a shorter that can break it.
L.R.