Hello warrior LazyBeeHatch,
update your flash player, there also can be other hardware or software configuration issues on your side, many players, not only me, been online for eight and more hours without a single crash.

its not a pc problem, it occurs mainly to players on the european server. This happens when the server or service provider cannot cope with the amount of data being processed.

Hello LazyBeeHatch,
game could stop working when internet connection is unstable, it depends on local ISP players have.

Happy hunting!