I tried to add my own custom hat, in the items.xml it's Id "91"...

But I added this line to Athena's Item DB, when i try to @item 91 1, It seems not to
work at all.

This is the line:
91,Elder_Hat,Elder Hat,5,,,,99,99,99,,,2,,,,,{},{}

I have no idea. I included the directories, Im using 8.0 GUIChan, I updated all the stuff. Same thing..

C:\TMW\src\/gui/windowlistener.h: In member function `int WindowEvent::getType() const':
C:\TMW\src\/gui/windowlistener.h:51: error: `mType' undeclared (first use this function)