Blackscreen Renamed Maps

[Mochi]

Hello friends, 

I'm having some rendering problems. I'm using Gravity old maps (Old Payon, Old moc_filds ...) and they are all with this bizarre problem.

 

 

This happens when I'm walking or turning the camera, after a few seconds the map back to normal.

 

 

PS:

- I used the browedit to rename the maps, I did not edit anything, just saved the map under another name

- The default game maps are working normally

 

 

 

Does anyone have any idea what might be happening?
Thanks!

Edited July 8, 2014 by Mochi