It said it was installed but when I tried to run it I got an error message saying ExtJS library not found. It suggested I look for fetchscript.php and make sure it was chmoded to 644 or 666 (it was 666). I tried it with IE and FF. I installed and uninstalled a few times with each and tried to find support but only one review (here) mentions this problem and there is nothing in the bug reports that I could find. I use windows xp and use Siteground for my web host. I finally tried chmoding it to 777 (didn't work) then to 644 (success).
I hope that my experience can help others.