This is the console output. https://paste.apache.org/ET6T
The problem is probably with this line -sdk-js-lib=C:\dev\flexjs\flex-sdk\frameworks\js\FlexJS\generated-sources It looks like it's relative to FLEX_HOME which is the classic SDK. Also, generated-sources no longer exists. -- View this message in context: http://apache-flex-development.2333347.n4.nabble.com/FlexJS-Building-from-Flash-Builder-tp56438p56513.html Sent from the Apache Flex Development mailing list archive at Nabble.com.