Dirt 2 executable.exe stop working

['Tx.Apollo]

I have:

E2200 @3,04 Ghz
4GB A-Data 800Mhz @ 821Mhz Ram
Radeon 4770
Windows 7 Home Premium 64Bit

Error with Dirt 2
and after 15 minutes playing i get the error dirt2executabel.exe stopped working.
Latest drivers are installed.
Ideas?

[Vash]

Did you install the latest patch? Maybe your comp gets too hot?

Moved to support forums.

[iStarZy]

Try reinstalling. I kept getting that whenever i played BF2142 but i reinstalled and it was fine.

['Tx.Apollo]

@ vash: youve seen my case. i didnt think the comp get to hot

@starzy: wanna try out

EDIT: Done.
I replaced the content of
.../Codemansters/Dirt2/system/workerMapCore8
with the content of
.../Codemansters/Dirt2/system/workerMapCore4