Amosman,
You can learn how to correct this error by reviewing the Autodesk Algor Simulation knowledge base. Access GOOGLE and type "Autodesk Algor Simulation", then choose the support link at the bottom of the page. Click on the link for the knowledge base and perform a search for "Side". The hyperlink is as follows (I don't know if it will appear when posted?):
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=14927729&linkID=13806469
Pat Tessaro, P.E.
Autodesk Inc.
Pat Tessaro, P.E.
Premium Support Specialist – Simulation
Autodesk, Inc.
6425 Living Place
Suite 100
Pittsburgh, PA 15206