problems with pavement (and cross sections) design.

What software are you running (including version number)?

What are you trying to accomplish?

What tool are you using?

At what point in the process do you get this error?

You will need to give us much, much more information for us to help you.

I am using as above version and 

and at the following stage problems is facing 

The error message would imply that there is something missing from your PLD models - but I am not able to say what. Check that all requirements have been set correctly.

Is there a particular reason that you are not using MX SS4 (8.11.09.904)?

The error message would imply that there is something missing from your PLD models - but I am not able to say what. Check that all requirements have been set correctly.

Is there a particular reason that you are not using MX SS4 (8.11.09.904)?