Worked perfectly on my x64 VM, didn't have to change any settings from the last version, just edited the reg file and logged out and then logged in and working 100%, no noticeable lag, no random crashing when opening start menu (with SIB) as I was getting in all previous versions, only thing I have noticed so far is if you restart explorer (using a right click context shortcut) the whole screen is blurred for a second, I was just wondering though if you plan on making blur and rounded corners optional in your final release, I love that you have found a way to bring back all these features but personally I prefer no blur at all and have it disabled in Windows 7 on explorer windows anyway. Also one other question, with that registry setting for rounded corners, is there any way to reverse that effect and make corners square in Windows 7? Here's a preview of mine with a Windows 7 theme I imported, made changes to the fram to make it square but I guess I can have rounded again now as well thanks to you