White square box in the water

[wiki 737]

Hi guys,
Anyone know how to fix this White square box effect in the water when the bomb hit the water and i think it's related with water splash or something but i still didn't find the cause

 

[KJakker 911]

First, take a look at your MissileObject.ini and see what Water Hit Effect Name your bombs are set to use then find those effects in your Effects folder. Once that is done look at the Materials listed in effect ini files to see what texture names are listed for those effects. After you do that make sure that you have all of the right .TGA files in your effect folder. Then test the bombs in water again and see if the effects are working properly.