I had a previous project working fine that I pull from github as I have a partner working on another system.
After I pulled his latest version of the app the tiapp.xml fails to load.
1. Update Studio to latest 3.1.4 build
2. Pull a tiapp.xml with a different SDK version to one you own.
3. Open tiapp.xml
Throws a null pointer exception
Change tiapp.xml to an SDK that you have installed.