When adding the property ti.facebook.appid in the tiapp.xml, the Info.plist file generated is invalid. Working fine on 2.1.4
1. create a new Titanium app in Studio
2. add the ti.facebook.appid property in tiapp.xml:
3. build the app, then open build/Info.plist
In the file, you can see under URL Types / Url Schemes that there is an item with value fb[Object object]; building the same app with SDK 2.1.4 shows the correct value fb1234567890.