Cloud project won't pass 92% on loading

Just finished a few days ago creating a project and populating it with media files.
Everything seems to be workind ok till I put the project on collaborative mode, when it simply keeps stucks on loading (92%-94%) and I can only open it again in read only mode. This has happened with several projects.

And if I try to create them with collaboration already activated, it stucks at 92% directly.


Any idea what could be happening and how to fixit?