Can't play animation

So reacently I downloaded Synfig studio(for linux mint 17) and tried to create a simple animatio, a moving dot whit only 3 keyframes, the animation works if I play it frame by frame but for some reason when i hit play nothing happens.

P.S:I checked if i was in animation mode and I paid attention at the placement of the keyframes.

Can you return to a previous Synfig Studio version that works like it used to work?
Which is the offending Synfig Studio version that you are having problem with?