I just downloaded the most recent windows installer (as well as the 2 prior installers), and have had absolutely no luck in getting them to run. Immediately after clicking run, an error window pops up, of which I have linked a screenshot below.
First is the 1.26.4.2 installer script error.
http://www.flickr.com/photos/59984603@N03/6851560138/And Here is the 1.26.4.4 script error.
http://www.flickr.com/photos/59984603@N03/6851560138/You can download larger versions of the image from the flikr pages (supposedly) if you have problems reading the text in the images.
I looked through all 7 pages of the bugs forum, but was unable to locate a similar problem. I also checked in the help section for installation help but didn't see this error either.