GBA GBA game stuck on white screen upon starting

[kamiszn]

I'm new to this and I just finished creating a Pokemon Emerald cia file. After installing it with FBI I tried to star the game and after a warning about sleep mode showed up the game is stuck with a white screen on top and a black one on the bottom. Any idea what might be the problem? Thanks in advance.

 

[Maximumbeans]

What did you use to create the CIA file? Is this a normal Emerald ROM or has it been modified in some way?