Hello pollo
I have sometimes errors too, but for this error I already looked up for it.
Reason why it doesn't work: New Blender versions or beta versions are bugged
How to fix it: Uninstall your Blender, then install the Blender version 2.59 [DOWNLOAD: http://www.oldapps.com/de/blender.ph...=6195?download] and add again the CoD Import/Export tool
The Blender version 2.59 is a older version and it works fine with the CoD tool.
If you have got still errors, then write here the error