If I create a new Montage project and add collaborators via the Github website, the collaborators can't open the project with Montage Studio. The message "Error loading the project" appears, with the buttons "Close" and "Retry". Retry doesn't work, either.
Is there a known issue with shared projects? Should this work?
Unfortunately opening a project from another user's account is not currently supported (although it is a feature we would like to add). What we recommend you do is have your collaborators fork your project on Github. They can then edit their own copy, and you can manage collaboration with Github's pull requests.
Hope this helps.