Game crashes when closing Welcome notification

[Bloodgangsta]

I play Plague Inc. on Android 4.0.4 tablet with total 480 MB RAM. I choose my plague type & name it & then I insert genes & game starts. Normally, the welcome pop-up shows itself & you can proceed by tapping on X (close) button; but when I do this game crashes & jumps to tablet's app menu What should I do? Is this a bug? or I should do sth