BODS hangs in 3rd level while loop

Hi developers,

I am stuck in  a strange issue in BODS.

In one of my I have to handle 3 levels of while loop.

So 1 loop under another loop which is under another loop.

But as soon as I enter into second while loop and try to create next loop level, bods gets stuck.

I cant do anything but kill the process from task manager. I checked many times but same thing..

Can some one please help me upon this..