StackOverflowError while building PIP 7B1

While trying to build the PIP 7B1 in the PIP builder screen of Rosettanet through the DTD file ‘7B1_WorkInProcessNotification_V01_00_00’, I am getting StackOverflowError on the screen. The server log has the following lines ‘java.lang.reflect.InvocationTargetException:StackOverflowError’. I can see the PIP structure in wMdeveloper but cannot see the conversation scripts in trading networks. Also, the BizDocTypes do not seem to have been generated.
If someone has faced similar problem, could you please help me out of this.