THIMC, I have installed the EcoDesigner application on two different machines with the same dongle for ArchiCAD V12 and I get the same error message. The dongle is working as Archicad loads up on both Windows XP and Windows Vista x64.
The error message is
Protection key not found or not valid for Ecodesigner (1050017)
Note: to use EcoDesigner in demo mode, switch blah blah blah.
Any help on this matter would be greatly appreciated.