I think I may have figured out what is causing this issue and how to fix it for until the Dev's can fix their side of the problem.
(Windows 7 Users)
In order to remedy this problem click Start > Control Panel > Change View at the top right hand corner of the window to Small or Large Icons > Click User Accounts > Click Change User Account Control Settings > Move the toggle bar all the way down to the bottom. Reboot
(Windows 8 Users)
Click Start button, and then click Control Panel. In the search box, type uac, and then click Change User Account Control settings. Move the toggle bar all the way down to the bottom. Reboot
By disabling this it has no real adverse effect on your computer unless your in a Domain environment, which I would assume none of you are. Anyways, once you complete this, reboot your computer for the new permissions to take effect and then give it a try. If this does not solve it for you please post here so the Dev's know. I hope this helps, if not feel free to private message me and I will be happy to help if I can.