You were right about the PLVZ2 and the HDMI. I was initially able to get it up and running from the AVM50 but after a couple of days all I get now is the blue screen of death if I attempt to use the HDMI connection so as a result I am only using the component outputs.
Another thing I noticed is that I was initially unable to do a rough calibration of the projector using the THX optimizer on various DVDs. When I was at the screen with the large white rectangle made up of smaller white rectangles of various white levels that was to be used to set the proper contrast level all I saw was a large white rectangle with absolutely no sub-rectangles. There was no level of the contrast or brightness controls on either the AVM picture menu or on the projector menu that would allow me to even see that there were any gradations of white level.
As a result, for example, when I watched "The Incredibles" scene 3 where Bob is stamping "DENIED" on the insurance form I was unable to read any of the other print on the sheet...It was one bright sheet of white only. I was able to fix it by going into the video ADC sub menu of the picture menu on the AVM50 and adjust the video input gain to an acceptable level that I had to determine by eye. Now when I view the same scene I can easily see the printing on the sheet.
On a side note, I read here that the AVM50 will not be able to use the upcoming room EQ software. I do, however, have the Audyssey Sound Equalizer and if the EQ (which appears to use a similar measurement algorithm) works as well as this, then you're in for a treat. It is without question the best single improvement that you can get for your sound system.