For a day or two the app was working fine on my nvidia shield tablet but now every time i try to go into my saved projects the app crashes. Every other part of the app works fine except for the project button. I have tried uninstalling and reinstalling but nothing fixes it. Any help would be appreciated.
Are you using the latest version 3.7.1?
In this version the developers changed the path where the project and files are saved. They used to be in the Pictures folder but now a Pix4D folder is created in the main folder of the Internal Memory.
What you could do is to check the path set in Pix4Dcapture: Home screen > Settings > section Advanced.
Then we would suggest to move the folders of previous mission to that default path in the Pix4D folder when you connect the device to a computer.
Let is know how it goes.