upload to Dokeos as SCORM results in Unknown package format error

Hello,

I'm trying to upload a SCORM course to Dokeos but it does not work. i've tried uploading the entire course (17mb), part of it (3mb), with settings Scorm 1.2, 2004. I always get the same error: Unknown package format error.

Does anyone have any ideas what i'm doing wrong? to make this even more frustrating, a few months ago, i've uploaded the entire course without any issues. now i have to upload updates, and this is what's happening.

Any ideas?

mj