Issue with the SOAPUI WS-I Analyser

Need your help guys.

I am not able to run the compliance on a WSDL File.

There are the steps i performed.
Create Project.
Import WSDL file.
Rightclick on the WSDL File and Run for Compliance Test.

WSI Analyzer window is displayed and i get the following message.

Please wait while the specified artifacts are analyzed...

Notheing happens after i get this message.
I had to wait for 1 hr and then had to stop the analyzer.

Could you please tell me is this issue with the WSDL file or am doing something wrong whilst running the compliance test.