DELL Management plugin for vCenter registration problem

Hello,

I keep getting an
exception when I try to register the vCenter server. From the vSphere side it
appears to register on my client but then when you try to do anything with it
(create connection profiles etc.) it says that the vcenter server is not
registered. I have tried to remove it from http://vcenterserver/mod
and it appears to be removed but still wont re-register properly.

Any help would be greatly appreciated.

Thanks,

Peter.