According to the compatibility center website, only the version 9 of the program is compatible with Windows 8.1. In this case, the only thing that you can do is to upgrade your program's version to a newer one. You can try to run the program in Compatibility Mode, but you might encounter errors along the way. To do this, right click on the EXE file of the program > Properties > Compatibility > Run the program in compatibility with Windows XP.