Error when playing Farm Fenzy 3

[karl84]

When I played for about 30 mins the error occured:

void cMainLoop::changeLoop
void cMainLoop::checkLoopFinsh
void cMainLoop:rocess
void cEngine:rocess()
Critical error in the game. Download and install new version

I think the game is auto update in steam, would you please fix this problem? When this happen the game progress will lost