I 've been using trail versions for a while and decided to purchase the licensed copy, so I did and registered it. After that I am facing each time unexpected crash during video edition. The picture freeze , no main options and buttons working. But the sound going on continuously on the background, even if I exit Videopad. I need to go in Task manager to terminate the process there. otherwise the program is running. I use Windows 7 with all necessary drivers ( OpenGL and Direct X) installed.