I will have a good play around with it tonight and see what I come up with. The app i am porting is fairly bulky so I will start from scratch with a cut down version and work it backwards from there.
my error is as follows:
[ERROR] def was null
[ERROR] failed to find meta class definition for name proxy.sqlitestorage
[ERROR] Exception running app build : JavaException: com.sencha.exceptions.BasicException: null
[ERROR] javax.script.ScriptException: JavaException: com.sencha.exceptions.BasicException: null in <Unknown source> at line number 709