SSIS from the remote machine it says that "RPC servers is unavaiable"

When i was connecting to SSIS from the remote machine it says that "RPC servers is unavaiable"
I am using SQL server 2008 and the remote machine is Windows 2008 and the windows firewall is off.
Please help . it is a urgent one. how to overcome this.?

This is a very generic message. If you have installed all software properly, server names are correct, you can ping them from client, and no firewall issues in between, you can check on two things

1. Check whether the RPC service is running in the server
2. Check this site: it may be your problem too:

http://social.msdn.microsoft.com/forums/en-US/sqlsetupandupgrade/thread/3f0c8abc-fb6b-41a1-8c46-577b8f2a01a8/

Thanks Preethi/Sathya
I restarted the SSIS, followed the instruction from preethi but still it is shows "RPC server is unavaible"