It is working on osx with both SDK (AIR and Flex), but I have the same error when using Flex on windows:
Error: Unable to access jarfile \=//lib/mxmlc.jar
I am investigating why tomorrow.
It is working on my side with the latest AIR release on windows too.
I do have an error with the new AIR, but only because it is trying to search for the player global 15.0 instead of the 16.0.
I believe it is doing this because the last release of crossbridge is targeting 15.0 and the last release of Air only contains the 16.0 playerglobal.swc.
On my side it prints:
C:\workspace\AIRSDK_Compiler\frameworks\flex-config.xml:47 Error: unable to open 'C:\workspace\AIRSDK_Compiler\frameworks\libs\player\15.0\playerglobal.swc'.
With this error I can either force the SDK to use the new one by changing the line 47 of AIRSDK_Compiler/frameworks/flex-config.xml from :
(Check in the AIR_SDK/frameworks/libs/player to be sure of the version number of your playerglobal.swc).
There should be no problem, because they are retro compatible.
Or you could also just copy/rename the folder
< AIR_SDK >/frameworks/libs/player/16.0
< AIR_SDK >/frameworks/libs/player/15.0
You could also try to use Air 15.0 instead.
If it does not work with AIR either, send the console output. I'll try to reproduce.