dead island riptide crashing after a few minutes fix working 100%

does you see a message while playing 'dead island riptide' for a few minutes?
-dead island riptide has stopped working.
the solution is easy....very easy..
1-open the game
2-go to options
3-click on tab 'online'
4-change the options 'cooperative' to 'single player'.
and the problem is solved....
enjoy.