NFS issues with Proxmox 3

I just installed Proxmox 3 on a spare server to test before upgrading my cluster and I am having some nfs issues. I have a couple shares that are connected to the main cluster running 2.3 and I tried adding my 'ISO' share so I could use my install images. I am able to add the shares in the interface but I get errors and am not able to see or use the content. I logged into the terminal and did a 'df' and the share was available to the system. I was able to get to it and view the contents. When I go to the content tab this is the error that I get

Has anyone else had issues with this? Any ides on what to try?

Thanks