Memtest won't load

[TJones2]

I've run Memtest+, the lastest version no problem but Memtest, the lastest version won't load. It takes me to the bootup window giving me two options, the current beta version or the older version. If you choose either, it says its loading but never goes anywhere.

config:
Gigabyte GA-Z68X-UD3H
i5-2500k
G.SKILL Ripjaws X F3-12800CL9D-8GBXL 8GB 2X4GB DDR3-1600
Seasonic 850w
HD4850