You can't open the software because either the program is not compatible with your system or some of its files are corrupted. In order to fix the issue, right click on the MixMaster Deluxe launcher and select Run as Administrator option. If it doesn't work, try uninstalling the application and then installing it again. Also, as an alternative, you can use a similar program from Software Informer database. Many of them are free of charge, easy to use and have the same main features like MixMaster Deluxe.