Roaming Profiles error

We are a small company that has been using Active Directory with Local Profiles, we are wanting to move over to Roaming Profiles. I created a a shared folder that gives access to everyone, and then created a test user in AD. Under the Profile Path I have it set to \\server\sharedfolder\username. On the system i first logged into with the test account it logs in fine and after a log out all the folders are updated on the shared drive under that test user. I can log into that system and make changes create files and they are saved when logging out. When I log into another system using that account I get the error "The Group Policy Client Service Failed the logon. Access is denied". All the systems are Windows 7, and the server is 2008R2.