Brent,
I have a couple of questions.
- When did you build it? Using 4.2 or 4.3? We just released the AppStudio 4.3, and we want to try to build it using 4.3.
- Did you run it in the AppStudio 4.3 AppRun on Desktop? There's a chance this is related to EmailComposer OnComposeError breaking change. What's new in AppStudio—ArcGIS AppStudio | Documentation
Apps that previously used the EmailComposer onComposeError signal will have to be rebuilt using the new onErrorChanged signal. Without this change, the app will fail to launch.
For the Quick Report template that was built before 4.3, you can make the changes in QuickReport/pages/LandingPage.qml around line 675.
In general, the white screen issue means that there is an issue with some of the QML components. It could be a missing import statement, and it could be something that we made sure that it is working on the Player since a lot of people are using Player for a distribution method. Especially the EmailComposer breaking change issue, we made sure that it is not throwing an error in the Player but if you are doing a Cloud Make, you would need to make the changes and would have seen the error message when running on AppRun in AppStudio Desktop.
Thank you,
Erwin