Currently Being ModeratedMar 13, 2013 1:42 PM (in response to 9pea)
Is the entire project folder inside dropbox? If so, I would selecting from the menu bar File -> Project -> Consolidate. I reccommened just copying over everything just to test it. You can delete the extra scrap files (that are not in the consolidated file) after the fact.
If not, move the project folder, and not just Project file (Plus other added files) to the project and repeat the above step.
Let me know if it doesn't work.