Ok, I've gotten partway through setup here (maybe half way.) Here's what I've been doing:
1. In Launchbox: Import Roms from Folder, set Emulator, Import Meta Data
2. Test a rom. Exit.
3. Close Launchbox and make sure it exits properly and within a reasonable timeframe.
4. Open Bigbox. Test ROM. Configure an controller buttons that aren't working how I want.
5. Exit, check and make sure Bigbox exits properly and within a reasonable timeframe.
6. Rinse and repeat for each system.
During step 4, while I was trying to configure a control to exit the ROM screen Bigbox unexpectedly crashed. I checked Task Manager and it exited completely, no processes running. Now when I open Big Box, just like before, it will load all the systems and if I try to open a system or a menu, or pretty much anything but navigate the systems it crashes again.
Would there be any way to reset Bigbox control mapping to default values without opening it? Say delete or replace a file? I'm familiar with editing XML files so if it comes to that I'm cool with messing with it.