This version includes our new MemTestPro launcher, with an entirely new interface.  If you'd rather, just use the MTPClassic.exe version which is the same as memtest pro 6.4. BUT we encourage you to use the new MemTestPro, as it uses the same tests as MTPClassic. There may just be a few UI glitches along the way. Please email memtest_questions@hcidesign.com if you find anything off. A screenshot of what happened will be more useful than a bunch of text describing it....