After upgrading to v4 all of my downloads are no longer working,

The pathing seems correct in the file system vs the database, but downloading i get file not found with the url ending in

?do=download&r=99&confirm=1&t=1&csrfKey=46fa41f2845f04147d7093552f48d6f4.

Does the csrfkey mean anything because it seems to be the same no matter what file I try to download.

I am not sure where to begin with this any ideas or thoughts?

Please file a ticket to Support, I'm sure that's something we can fix.