SOLIDWORKS 2017 has some great new tools for troubleshooting Shell features, and they're baked right into the Shell tool itself! 

When Shell features fail in SOLIDWORKS 2017, the software provides more descriptive messaging regarding the failure and brings useful tools to diagnose the problem right into the Shell Property Manager.

Introducing SOLIDWORKS 2017 New Troubleshooting tools for Shell Features

Watch the video to see these great tools in action.