That is a sales contact request whcih I have filled out.
I was hoping there was somebody who might have a similar problem and might know the answer.
You'll need to contact Bentley for that one, maybe check the free downloads area if you have whatever they call their subscription package. If ProStructures is 2013 compatible, then there should be an object enabler available.
Start with some of our most frequented solutions or visit the Installation and Licensing Forum to get help installing your software.