MapGuide 2011 or Infrastructure Map Server 2012, Invalid License error Using MapGuide Studio or Map Agent

In addition to this solution, this error can also be due to the ipv6 on the license server.

Please make sure you are running ipv6 version of license manager (especially on Windows 2008 servers which has ipv6 enabled by default)

www.autodesk.com/nlm-ipv6-windows

www.autodesk.com/nlm-ipv6-linux

www.autodesk.com/nlm-ipv6-mac

Thanks to Cecilia Fantini for sharing this.