If using Windows, get a second 4gb stick...4gb is enough for linux, barely cuts it for win.
Not kidding, it won't work...I run both win and linux mining rigs. (curecoin needs win for now :/)
Just 2 gigs of ram on both of my rigs (win7x32) and vertminer runs excellently. No errors, no stales. So this is just a bs about needing more ram.