You must install as administrator or with administrator permissions. You may have a problem with antivirus or malware protection software. You may also have a conflict with other DVD copying or burning software that is already on your machine. Make sure you downloaded from DVDFab dot com, not DVDFab dot net. You can also download from the link in the v220.127.116.11 beta announcement thread here in the forum, post #1. We need more information to be able to help you--when does it crash, any error messages, your operating system, etc.