Please fill in as much as you can :
Date and Time : 05/08/2015 12:45 GMT -3
Bug Description :
(letting us know what you were doing before, during, and after the bug happened will help us a lot)
Fighting large kepa, the helping npc walked towards the stone and it got stuck, check collisions of the npc or structures around that part of the map please 
Steps to reproduce the issue :
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Screenshots / Video :
(attach screenshots or videos regarding the bug)
http://puu.sh/jpQVi/66ddb34d3e.jpg
System
- CPU : Phenom X4 955 BE
- RAM : 4GB
- Graphics Card : GTX 780
- Mainboard : Gigabyte 890GPA-UD3H
- Storage : 1TB WD 7200 rpm
- OS : Windows 7 SP1 64 Bits
- Internet Connection : 3mb DL 256kb UL
- Country, Region : Argentina, South America.