Clear-Com PGM-WIN the Matrix +3 configuration software is not compatible with Windows Vista.
PGM-WIN works on Windows XP and previous Windows Platforms.
PGM-WIN works on Windows 7 x64-bit PCs if Windows XP compatibility mode and Windows Virtual Platform is installed. See other solutions for more details.
updated August 2012
Note: This also applies to the RCS-WIN program for RCS-2700 units