Universe does not exist or your security profile does not allow to access

Hello, I have built a universe using IDT tool and sql server 2008 R2 is the source database used(installed in my local machine). It is very strange that sometimes I am able to access the universe via Web Intelligence Rich client and sometimes not. I do have created some sample webi reports but however because of some issue, i frequently get an error message as shown below. Over a period of time if i try again connecting to the universe, as a surprise it works. Please help me on this.

BOBJ version: 4.1 SP 2

DB: SQL server 2008 R2 64 bit

Error message:

Appreciate the quick help.

Thanks,

Lokesh