Well, I just got back from profiling our projector. Now I know how it got it's name...there was a lot of munkiing around.
First of all we couldn't get the Munki to measure the light off the screen. We are using an Optoma EP739 which is rated at 2500 Lumens and a 12'X9' projection screen (White non beaded) and project to fill the screen. In order to get the Munki to read the screen we had to move the projector closer to the screen and the projected image was 6' across before it was bright enough to start to take measurements. Turning up the brightness setting of the projector made the image brighter but not enough so we set it back to it's default. After going through that we thought we had it made, the Munki went through all the color patches (around 90 of them) and gave us a profile. It looked terrible, bad colors (Blue=Magenta) and low contrast.
After thinking about it for a few minutes I started to wonder if somehow the laptop's (PC) current monitor profile (which I had created previously with the Munki) was interfering with the process. I went into the display settings and changed the default profile to sRGB, restarted the laptop and profiled it again (Still had to keep the display size at 6' for it to measure though) , this time the profile looked quite good. We moved the projector back to it's regular distance and bumped up the brightness setting a few points to compensate for some of the light loss from the greater distance,ran through some images and are satisfied with the results. We'll know for sure after our monthly evaluation night next week.
In conclusion It looks like X-Rite has some problems to resolve, first either the Munki doesn't have enough sensitivity for this job or there is a software problem with reading the levels (I suppose there is a slight chance that the voltage drop was too great through the extended USB cables or that the laptop wasn't putting out sufficient power on the USB bus).
The rest of the problem appears to be with the software not writing to the video card correctly.
After we were finished I noticed a profile called XRite_LinearProfile had been created in the process. I'm assuming this should have been loaded into the video card's Look Up Table before the measuring routine was started but never was. I just compared the linear profile to sRGB on my laptop when I got home and they look about the same. Next time we profile the Projector I'll load the Linear profile into the LUT before starting (unless X-Rite resolves the issue first).
I hope my experience helps anyone else planning to Munki around with their projector.