I'm running PT 12, and I don't have any VST plug-ins in the VST window. It asks me to load a VST plug-in, I get the list of PG Music VST plug-ins, pick one, and the computer tells me the PG Music plug-in is not a valid VST plug-in. My Dad is having this same problem running on Windows XP. I'm running Win7 The PT 12 program asked me if I wanted to load the DX plugins and acted like it did, but they aren't showing up in the "green and back" windows for the plugins. What are we doing wrong?