If you use a higher operating system than Windows XP, then you will have to apply a compatibility tweak. I have tested this software on Windows 8 Pro x64 and it was absolutely necessary to apply a compatibility setting for the program to work properly. Right click the executable and go to Properties > Compatibility. Select Windows XP then tick the Run as Administrator. After this procedure, reboot the PC and start the MyFelix again and it should work properly.
If you need another version of the software, use the download page at Software Informer in order to save it to your PC.