Hi Leokan, I had already tried using both http and https with no luck.
I managed to get ADL working by replacing the bin folder of the SDK (AIR 33) with the one of my SDK AIR (31). This is at best very sketchy fix that could potentially cause other problems. I would like to understand if this is an AIR 33 SDK issue, a FLEX SDK issue with AIR 33 SDK or if (more probably) the problem is related to the way I generate the SDK. My procedure on MAC OS 10.12 is as follows : 1 - Downloading the FLEX SDK 4.16.1 binaries from the apache flex website <http://flex.apache.org/download-binaries.html> 2 - Downloading the non-included dependencies using the Ant command 'ant thirdparty-downloads' indise the frameworks folder of the SDK 3 - Downloading the Harman AIR SDK for Flex Developers from Harman dedicated website <https://airsdk.harman.com/download> . 4 - Unziping the downloaded SDK and generate a .dmg from it using the disk utility tool (unlike Adobe which provides the AIR SDK as a .dmg file for MacOS, the Harman SDK is provided as a .zip) 5 - Overlaying the FLEX SDK using the procedure described by Adobe <https://helpx.adobe.com/uk/x-productkb/multi/how-overlay-air-sdk-flex-sdk.html> Has anyone else on the list generated a Flex SDK with AIR 33 ? Have you encountered problems doing so ? -- Sent from: http://apache-flex-users.2333346.n4.nabble.com/