Hi Micheal and Ranjay,
Thanks for your response.
Have tried to reload the wmPRT package, it gets reloaded successfully but again same error occurs.
I also checked the version of the clients and server, for clients (Designer/Developer) we are using 8.0 and for server (IS,Process Engine, Task Engine) we are using 8.2 in our local machines.
But then i also tried to deploy the same BPM to Dev environment which have webMethods all components on 8.2 version, there also got the same issue.
Also when i try to go to Home of WmPRT package from IS, a blank window gets open with no content in it, ideally it should have the contents of the same package.
I think that might be WmPRT package got corrupted any how (not sure how).
Is there any possibility that WmPRT package or any other WM internal packages got corrupted?
If yes then can we import the same package from other higher environments(QAT,UAT) ?