As its name suggest, BluVista32 is developed to run on Windows Vista computers. It can run on Windows 7 platforms, but there can appear some problems. I recommend you right-click the icon of the program, select Properties and open the Compatibility tab. Check Run this program in compatibility mode for box and select Windows Vista from the provided list. Click Apply and then OK. If the issue persists, uninstall and reinstall the software. This process will reset the BlueVista32's configuration and you will be able to print the reports normally.