If the intro screen played its animation, you can find the error log in the same spot as your reborn file, except it's under Pokemon Carousel folder instead of Pokemon Reborn. It should be called Error.Log or Error.Txt
If you DID NOT get an intro screen animation, you can find the error log in the PokemonCarousel_Data folder, located next to the exe. titled OUTPUTLOG
Copy the contents of it and send it to me and I'll see what the issue is