If your issue is not solved by the below information, please visit the Mango forum.
Troubleshooting
The surface builds and there are no errors, but the surface viewer is blank. Why?
The surface viewer requires OpenGL support. Please ensure that you have recent graphics hardware drivers
installed for your computer.
What else can I try?
Open the Console from the Window menu in the toolbox. Check for any error messages and post them to the forum.