This is what it says
I couldn't find anything relevant on this and since I can't reproduce it I don't really know how to fix it, sorry... All I can advise is taking a look at the compatibility options in the .exe properties and maybe run the compatibility troubleshooter.
Which version of Windows are you using? Are you using the zip or installer? If you're using the installer, I'd advise to uninstall and try using the zip instead ; the installer really doesn't bring anything and I'm going to stop uploading it going forward.