cordova-plugins-file-transfer from npm prevent deviceready to fire

When using phone gap build the deviceready event does not fire when using the newest cordova-plugins-file-transfer (1.2.0). I'm also using the cordova-plugins-file from npm (2.0.0 or 2.1.0).

If I remove the cordova-plugins-file-transfer line from my config.xml and rebuild the app, the deviceready event fires as normal.

Can someone explain what is going on? Everything works fine when when I use the iOS emulator.