Anna, Which operating system are you using? This sounds like a problem some students have seen when trying to run Wildfire 4 on Windows 7 computers. Wildfire 4 is not supported on Windows 7. There are 2 methods for trying to get around this issue: 1) Update your graphics driver to the latest version. This works for most students and is the best option. 2) Add the config.pro option "graphics win32_gdi" to your config.pro file (Tools> Options) and restart Pro/E. Pro/E will then start without hardware graphics support, thus bypassing your graphics card. Regards, Adam Haas PTC Education Programs