1. Downloaded Community Edition of Aptana Studio (full win32 installer .exe) from your web site (http://www.aptana.com/download). Download worked ok.
2. Installed on my system - only changes to defaults was to specify that Apatana was NOT to be associated with editing any of the specified file types and chose c:\dev\Aptana as the installation directory rather than c:\Aptana. Installation worked fine.
3. Fired up Aptana Studio. Opened the Aptana home page and, per your webcast instructions, clicked on the Ruby On Rails installation button. The 'Updates' pop-up window appeared correctly with the option to install Aptana RadRails.
4. Clicked in the Apatana RadRails checkbox and received the following error message: Ruby Mylyn Connector Feature (Optional) (0.9.1.200711131528NGT) requires feature "org.eclipse.mylyn.context_feature (2.0.0.v20070628-1000)", or later version.
5. Could not proceed due to the error so cancelled the update.
6. Went to Help=>Updates=>Find and Install. Installed three Eclipse updates that the system found. Installation of updates worked ok.
7. Restarted my computer (just to be on the safe side - you know Windows!) and logged in as the system adminstrator. Repeated steps 3 throgh 6. The problem still exists: Ruby Mylyn Connector Feature (Optional) (0.9.1.200711131528NGT) requires feature "org.eclipse.mylyn.context_feature (2.0.0.v20070628-1000)", or later version.