Fix .log -> .dat for the first chunk, and make sure it bails if the load fails
Fix .log -> .dat for the first chunk, and make sure it bails if the load fails

fr500/mgba,fr500/mgba,Iniquitatis/mgba,libretro/mgba,zerofalcon/mgba,askotx/mgba,Iniquitatis/mgba,fr500/mgba,askotx/mgba,AdmiralCurtiss/mgba,MerryMage/mgba,libretro/mgba,sergiobenrocha2/mgba,nattthebear/mgba,bentley/mgba,jeremyherbert/mgba,cassos/mgba,Anty-Lemon/mgba,jeremyherbert/mgba,MerryMage/mgba,nattthebear/mgba,Iniquitatis/mgba,zerofalcon/mgba,cassos/mgba,sergiobenrocha2/mgba,Iniquitatis/mgba,iracigt/mgba,zerofalcon/mgba,matthewbauer/mgba,Anty-Lemon/mgba,mgba-emu/mgba,Touched/mgba,Anty-Lemon/mgba,Touched/mgba,libretro/mgba,mgba-emu/mgba,cassos/mgba,iracigt/mgba,iracigt/mgba,jeremyherbert/mgba,jeremyherbert/mgba,iracigt/mgba,libretro/mgba,matthewbauer/mgba,mgba-emu/mgba,AdmiralCurtiss/mgba,libretro/mgba,MerryMage/mgba,AdmiralCurtiss/mgba,askotx/mgba,sergiobenrocha2/mgba,sergiobenrocha2/mgba,Anty-Lemon/mgba,mgba-emu/mgba,Touched/mgba,bentley/mgba,sergiobenrocha2/mgba,fr500/mgba,askotx/mgba