Sencha Cmd 4 is cacheing and ignoring my file changes

When I run "sencha app build production" or "sencha app build testing", the output app.js file does not reflect the file changes I have made, and simply recreates the same app.js again and again.



Even if I delete the generated production and testing directories, the directories are re-created but the same thing happens, app.js ignores my files changes. Even if I delete the entire contents of controller/main.js which should cause the build to fail, it just carries on and does not read the content of controller/main.js.



I am using windows 7 x64 and Sencha Cmd 4.0.2.67.



Any help greatly appreciated