A Source engine plugin available for Mod Tool 7.5 and 6 (along with 32bit versions of Softimage). It offers SMD export and import for models and animations, VMF export and import for Hammer maps, Weightmap export and import, and with Various skeleton tools and sample rigs (Valve Biped).
Its for XSI right?
Yup. Sorry for any confusion, XSI = Softimage
For some reason softimage is having trouble creating the menu for ValveSource (something to do with valvesourcetools.js).
I have Softimage 2012 64bit Student Version and the 6.02 version of your tool. Any Ideas? Could it be because it's not the Mod Tools version? There's really no difference.
What does your plugin rely on?