can anyone help me on this error!

[Ragnar Lothbrok]

it's about castle treasure box, i try to change the items that drops in castle treasure box w/ my custom items... the problem is after hitting the treasure box and the custom item drop i got gravity error... but when i try to drop the custom item from my inventory i dont get error but when in castle treasure box i got gravity error... can anyone knows how to fix this error??

[Euphy]

All equipment dropped by monsters comes unidentified. You'll have to create entries in data\num2itemresnametable.txt.

[Ragnar Lothbrok]

already create entries on data\num2itemresnametable.txt,but still when the custom item drop i still get error...

[solved]

Euphy!