Content copier isn't copying files to destination in network or page mode

Hi there,

I cannot copy files from a wpmu installation as a network administrator
(select source, select files, add files, images, update create info, select destination) despite the fact I get a message saying all files copied.
I cannot copy single files to any other group/site ID, I get the error message, please select destination (despite having selected "german" for instance).

I have granted remote access and I need to copy about 40 files including images.

Regards,
Alexander