Problem using CAN PXI 8461

[Fareez]

Hi

I have got a PXI 8461 and installed latest NI-CAN sotware.Working on real time target, I am trying to run an example CAN VI and I am getting the following error.

In MAX, I have self tested the CAN ports and verified the interface name  of my ports.I have loaded the  configuration file and then sent it to RT. While running the step by step execution I have realised that  I am getting an error when I am execute the 'TASK INIT START'.

The interface is invalid or unknown. Solution: Verify that the interface is assigned to a

specific port within the Devices and Interfaces branch of Measurement and Automation

Explorer (MAX).

Many Thanks

[muks]

YOu cannot access the interface more than once at any given time.

Do you get any error code along with it?