I was using Blender the other day and after seeing my new mesh in game after exporting, I've run into a slight texture problem, where the texture on my new mesh turns completely white. It only occurs indoors when near any lighting source, so I'm thinking I must have messed up the normal maps or something like that. Not sure if I had the right import and/ or export settings.

Are there any import/ export settings that can 'cause the problem mentioned above?