[Error] PC Crashing in Essentials 18.1

Not sure where this is posted but here's the problem
Whenever I try to use a pc it says this

Exception: RuntimeError
Message: Script error within event 3 (coords 11,1), map 9 (Cedolan City PokΓ© Center):
Exception: ArgumentError
Message: Pokemon_Storage:94:in `<'comparison of String with 16 failed

***Full script:
pbPokeCenterPC


Backtrace:
Interpreter:197:in `pbExecuteScript'
Pokemon_Storage:94:in `isAvailableWallpaper?'
PScreen_PokemonStorage:374:in `getBoxBitmap'
PScreen_PokemonStorage:411:in `refresh'
PScreen_PokemonStorage:332:in `x='
PScreen_PokemonStorage:313:in `initialize'
PScreen_PokemonStorage:598:in `new'
PScreen_PokemonStorage:598:in `pbStartBox'
PScreen_PokemonStorage:1594:in `pbStartScreen'
PScreen_PC:194:in `access'


Backtrace:
Interpreter:246:in `pbExecuteScript'
Interpreter:1458:in `command_355'
Interpreter:359:in `execute_command'
Interpreter:155:in `update'
Interpreter:102:in `loop'
Interpreter:158:in `update'
Scene_Map:162:in `update'
Scene_Map:160:in `loop'
Scene_Map:169:in `update'
Scene_Map:229:in `main'

Havent changed the script that essentials already has
pbPokeCenterPC

Thanks

I cannot replicate this bug.
Do you have any more plugin/addon/new script, besides Essentials?

Also, just to get more information:

I copied wallpapers from pokemon desolation and now it works fine, dont know why but I am happy it doesn't crash anymore.