In the 13.2 CORE Generator software, if you select the "Defense Grade Virtex-6Q Lower Power" device, the SelectIO Wizard is greyed out.
Why does this occur and how do you work around it?
This is a software issue only. The SelectIO functionality is supported in the defense-grade Virtex-6Q Low Power devices.
You can work around this issue by targeting another Virtex-6 device, generating the core, and adding the ".vhd" file to the project.