Unable to create a animation "Set ValueDesc: Action is not ready."

I am very new to this program at my course.

I am just trying to get it going and to play around with it but I am occurring a problem.
When I change the frames from 0f to 60f and change the position for example a circle I will get this message box pop up: prntscr.com/hd94sj
Once I close this I then get this message box pop up: prntscr.com/hd952q

I have also had it crash several times!

Thank for your help in advance!