HI, OK made it a bit further but think we have some issues.
In in compiler/commandline both mxmlc and compc give errors if you try and run them which looks like a windows new line issue. Even when I fix that I get this: Using Flex SDK: /Users/justinmclean/Documents/ApacheFlex4.12released/ Error: Unable to access jarfile ./../lib/falcon-compc.jar The same new line issue exists for /compiler.jx/bin compc and mxmlc, when I fix those for compc I get: Using Falcon codebase: ./../../compiler Using Flex SDK: /Users/justinmclean/Documents/ApacheFlex4.12released/ Exception in thread "main" java.lang.UnsupportedOperationException at org.apache.flex.compiler.internal.driver.as.ASBackend.getSourceFileHandlerInstance(ASBackend.java:70) at org.apache.flex.compiler.clients.MXMLJSC.<init>(MXMLJSC.java:211) at org.apache.flex.compiler.clients.COMPJSC.<init>(COMPJSC.java:128) at org.apache.flex.compiler.clients.COMPJSC.main(COMPJSC.java:116) And for mxmlc I get something a bit more promising: Using Falcon codebase: ./../../compiler Using Flex SDK: /Users/justinmclean/Documents/ApacheFlex4.12released/ a target file must be specified. But If I give it a bare minimal MXML file I get: ./mxmlc dummy.mxml Using Falcon codebase: ./../../compiler Using Flex SDK: /Users/justinmclean/Documents/ApacheFlex4.12released/ CSS codegen problem. Reason: 'Unable to find compilation unit for Embed(source="Assets.swf",symbol="mx.skins.cursor.BusyCursor")' dummy is defined by multiple files: /Users/justinmclean/Documents/ApacheFlexFalcon/apache-flex-falconjx-0.0.1-src/compiler.jx/bin/dummy.mxml, /Users/justinmclean/Documents/ApacheFlexFalcon/apache-flex-falconjx-0.0.1-src/compiler.jx/bin/dummy.as I do have a dummy.as as well but I'm not asking it to compile that and renaming the file I still get the CSS codegen problem. Thanks, Justin