We have about 30 mins of footage made by the owner of the project. And i can't see any of his work what so ever.
hope you can help!
Has he shared the work? After he does his work, he needs to 'share' it.
If you do something and share it, do they see it?
Remember, the owner of course uploads all media into the Project. All others install the media on their system, and then use the Team Projects linking process and do not link to the media through the "normal" import process. If someone goes off the rails on this, it can screw up the project for others also.
he and i shared our changes with each other. but when he was making these sequences it wasn't a team project. And there seems to be no errors with the media links? so i don't know whats wrong.
Those question marks mean Premiere is not "seeing" those clips. So ... again, only the owner adds through the Project manager. You cannot simply right-click on those 'missing' clips and re-link in the Project panel.
You need to use the Edit/Team Project/Media Management option.