Cannot install Win Premiere Pro 5.5 plugin for HDX/SDI

I am running Win7, 64-bit with Premiere Pro 5.5.

I just bough an HDX/SDI and installed it on my Core i7 box. I have run MOTU's latest 'SetupVideo.exe' several times but the program does not recognize Premiere Pro 5.5 as being installed and thus refuses to install the plugin. I've tried reinstalling PP but it doesn't help.

MOTU Video runs fine. Oddly, Premiere DOES recognize the HDX/SDI as an audio device. Is there somewhere I can download the plug-in by itself so I can install it manually?

Any advice would be greatly appreciated,

John Dandurand
john.dandurand@gmail.com