this keeps coming up on my screen (pic below), no matter what i do it'll be back up a short while after!

can someone help me and tell me what to do/solve it PLEASE, its really gettin on my tits im on photoshop and when it comes up i cant do what im doing coz i have to click on that

its come up 3 times with in me writing this post stupid thing!!!

CheeRS radleigh