I am trying to do a very simple process at first - get an mp3 from default/files, convert it to a lower quality mp3, save it to default/files/converted and then delete the source file

But when I run the configuration, this happens

info	mm step: 0 Select: from a local directory (select__from_a_local_directory)	Harvesting: Select: from a local directory
info	mm step: 1 Transform: Convert file with FFmpeg (transform__convert_file_with_ffmpeg)	Acting on 1 files
info	mm step: 1 Transform: Convert file with FFmpeg (transform__convert_file_with_ffmpeg)	Processed 1 files on this run for Transform: Convert file with FFmpeg
info	mm step: 2 Store: to a local directory (store__to_a_local_directory)	Acting on 0 files
info	mm step: 2 Store: to a local directory (store__to_a_local_directory)	Processed files on this run for Store: to a local directory
info	mm step: 3 Process: delete source material (process__delete_source_material)	Acting on 0 files
info	mm step: 3 Process: delete source material (process__delete_source_material)	Processed files on this run for Process: delete source material

Then when I go to the file in the files browser for media mover, it just says error. Nothing else. How do I find out what the error is? 

3	NA	sites/default/files/White Lamp - Make it good.mp3	sites/default/files/White Lamp - Make it good.mp3		error	Thu, 11/01/2012 - 10:58
2	NA	sites/default/files/Four Tet - Lions.mp3	sites/default/files/Four Tet - Lions.mp3		error	Thu, 11/01/2012 - 10:51
1	NA	sites/default/files/Sugardaddy - How Long (Tensnake Vocal Remix) [www.muzeno.pl].mp3	sites/default/files/Sugardaddy - How Long (Tensnake Vocal Remix) [www.muzeno.pl].mp3		error	Thu, 11/01/2012 - 10:48

The only information when clicking into it is this:

Step: Select: from a local directory	File: sites/default/files/White Lamp - Make it good.mp3
Step: Transform: Convert file with FFmpeg	File:

Does that mean it's a write permissions thing perhaps?
There's nothing in my php or apache logs...a little more information about the error wouldn't go amiss

Is this module even bothered with anymore? There's so many basic bugs with stuff like the database tables install, the menu hooks calling the wrong function...I mean, should I just give up and use something else or does this thing actually work? I've spent many hours trying to get it to do something very simple and I'm still nowhere.