Hi, I tried it on AIR 25 my Windows machine and it also reported the same error. We'll see what kind of solution we can come up with for the Installer, but I think you should be able to use Ant. Get the binary package from [1], unpack it into a folder and run
ant -f installer.xml
HTH,
-Alex
[1] http://flex.apache.org/download-binaries.html
