Starting Friday at 1PM CST (19:00 GMT), X2O will support apps developed with Flash CS4. When you create a new project, you'll be able to choose between Flash CS4 or Flex. Nothing changes for those developing in Flex, but we hope this opens the doors to other Flash/Flex developers out there looking to try it out!

There are only two subtle differences to using the generated Flash CS4 SWC:

Fault Events
The Flex SWC uses the mx.rpc.events.FaultEvent class to dispatch fault events which cannot be imported in Flash. As a workaround, the Flash CS4 SWC uses the com.x2o.core.util.X2OFaultEvent class. This class contains the same properties as the Flex version. Just like in Flex, the generated Flash value objects dispatch fault events upon any service error from the X2O server.

Collection base class
All collection value objects in the Flex SWC extend the mx.arrays.ArrayCollection class. The Flash CS4 SWC uses the fl.data.DataProvider class.

Other than that, we hope think you'll find using both versions equally seamless!