Sorry, it turns out that was the wrong url.
I looked a little deeper and found this:
http://support.installshield.com/kb/view.asp?articleid=Q110959
It basically says there is a conflict with Turkish regional settings. That rang a bell since your profile says you are in Turkey - so that must be the problem.
Then I found this:
http://www.netbeans.org/nonav/issues/show_bug.cgi?id=52012
Which is regarding netbeans and might seem irrelevant, but it instructs that the only known workaround for the installshield problem listed above is to change the regional settings in XP. Try changing it to english (or something else), then install AC 10, then change it back to Turkish.
I hope that works. If it does, GS should obvioulsy be notified about this.