Constantly getting errors which make me leave the game.

My Specs :
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.111118-2330)
Language: English (Regional Setting: English)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: M68MT-S2P
BIOS: Award Modular BIOS v6.00PG
Processor: AMD Phenom(tm) II X4 955 Processor (4 CPUs), ~3.2GHz
Memory: 4096MB RAM
Available OS Memory: 4094MB RAM
Page File: 3099MB used, 5087MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode

My in-game settings :
BtUtu.png

My problem:
In the middle of a long game of,well anything,on any channel(I've tested this) I would always get an error pop-up if I do something like walking near a wall,using a skill in mutation mode,or doing anything really.I don't know why this happens or what causes it,but it's driving me crazy because I can't go one day with this happening.

A screenshot of one of the many errors I get : (Keep in mind it usually isn't always that same number from what I can recall.
GVaI9.jpg

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