Open your Geometry in SpaceClaim, go to the Workbench tab on the ribbon and click the Share button and click the green check mark. Close SpaceClaim.
Open your model in Mechanical. Under the Connections folder, delete all the contacts. You may need to repair the Fixed Support.
Click on Mesh and Clear Generated Data. Click on Generate Mesh. Try to solve.
You are navigating away from the AIS Discovery experience