I have downloaded the latest AIR SDK and compiler from here: http://www.adobe.com/devnet/air/air-sdk-download.html But Flash Builder 4.6 doesn't accept it saying it's not a Flex SDK.
Is there a way to persuade Flash Builder 4.6 to use the ASC2 compiler? I am currently using the Apache Flex SDK 4.14.1 which seems not to include the latest compiler. I even overlaid the AIR SDK on the Flex one but to no avail.