This is big: Adobe is removing restrictions on the use of the SWF and FLV/F4V specifications as part of their new Open Screen Project 2008.
When Mark Doherty emailed me to tell me about his post on Adobe's Open Screen Project 2008, I wasn't expecting such an important announcement.
Note that your document class in Flash projects should extend org.gaeswf.flash.BaseApplication and your Application MXML in Flex should be of type org.gaeswf.flex.BaseApplication (if none of this makes any sense to you, see my Flex 3 Code Behind Quick Start.)
Update: As of 2.30pm (when I last checked), the app appears to be working again. I've made no changes whatsoever.
The updates in a nutshell:
All changes in this version are server-side: