I am currently running Aptana Studio Professional (the trial) 1.0.2. When I clicked to update Aptana to 1.1.0, the upgrade proceeded normally until reaching a file called "http://update.aptana.com/update/3.2/features/com.aptana.ide.feature.editors_1.1.0.007007.jar" at which point Aptana threw an exception about not being able to reach the file and blocked my network interface (I know it did because all outgoing traffic halted until I clicked
[No]).
If I open the file in my browser (Firefox 2.0.0.11), I can reach the file and download it just fine. I've tried this as both my normal account (Limited User) and running Aptana Studio as an administrator, both result in the same issue.
I've attached a screenshot of the error message.