I have the same problem.
Please correct this.
I have read the build.properties file.
There is a note: you need to manually download the eap 6.1.0 zip and put it in the lib folder
I have gone to the https://community.jboss.org/message/830547 site and downloaded it manualy.
Now it works.
Thanks. Will check that. This time around I did not take pain to open the build file and check it.