I am getting this error when I try and run the steel and column module??? Can I send you my model to see if you can find the issue?
Here are some general tips related to that kind of issue.
To send the file, use the Secure File Upload instructions.
Smaller files can be attached directly in a forum post or reply with the Advanced Reply Editor (use the Insert media tool), but for RAM SS files you will probably have to upload separately.
I uploaded my model with the same issue