Problem with adding Model to Systems Synthesis

Hello World,

today i tried to upload a Model built in Magic Cyber Systems Engineer, which in exported as a .mdzipx, in the Systems Synthesis.
For that i tried to put the File in the 3DDrive to get accsess in the Repositories in there. -> Didnt worked because of an internal Error (302).
Another Method i tried is to add the File in the ENOVIA - Bookmark Editor and get access in the Respositories in there. -> Also didnt worked because of "An unexpected error Occured" 
May somebody had the same problem and found a solution ? Or is there a general other way to add Models to the Systems Synthesis ?

Thanks in advance an best regards.