Paul, give it a shot anyway. I use Windows 7 as well. The application appears to runs, I.E. no error messages. I followed the instructions in the PDF and tried to analyze an I/Q file from SDRuno but with negative result. After I clicked "process" it returned to the main screen with no waterfall display. I also could not find the "progress indicators" mentioned in the document or it is perhaps that I used an incompatible I/Q file to test with. --- Richard