Version 1.3 works better than 1.4 for me, except I cannot re-attempt a line by bringing my cursor back to the circle, it only happens if I use the mouse to bring it back there. However, it works fine in 1.4, but version 1.4 seems to not show the tablet graphic in "tips" (tutorial?) and there is some Spanish or other language in places and many more bugs. However, I love the concept.
Edit: I had a look at my Wacom settings, and I had Windows Ink turned off. Turning this on seemed to fix my problems with v1.3 "return to circle".