The EDID is being handled bY the Lightware 8x8 DVI matrix. Imported to use this method and put all sorts of Parrots or other extra DVI connections.

I will check the EDID settings when I see that rack again next. I am currently leap-frogging 2 identical racks around Asia.

Pretty sure it's not the mix settings as I am using the same Cat settings and show files between all 4 MacPros

Could it be something as simple as a bad DVI cable?

Thanks Again

Ken