While developing a Windows 8 (and Windows 8.1) Modern Application recently I ran into a problem where the application was crashing immediately after the splash screen. Windows manages the display of the splash screen while the application is loading, so even an application that crashes immediately will show the splash screen briefly.
You want to look in the event log, in the following location:
Applications and Services Logs - Microsoft - - Windows - - - AppHost
You will often see “Error” entries with source “AppHost”.