Today is May 6, and I have been having the same problem – I am reviewing themes in my browser window (ww.wp.xz.cn/extend/themes/), I am not installing anything. When I click on the preview button, it opens a blank screen. This is happening in both IE 8.0 and in Firefox (not sure what version number, writing this from my mother’s Mac), is also happening on her Mac in Safari. Repeat: I have installed nothing, am simply attempting to preview themes in my browser window. I am so relieved to find I am not the only one having this problem, but am anxious to see it resolved. I will be unable to choose a theme, until I can preview. Thank you.
