Sikuli jar sometimes can't exit after google presentation all slides executed

[ansonliao]

My Mac version is 10.8.4, Sikuli slide jar is "sikuli-slides-1.4.0.jar".
I run google presentation slides via command
"java -jar sikuli-slides-1.4.0.jar execute https://docs.google.com/presentation/xxx"

and finds that sometimes after all slides executed, sikuli slide jar can't exit auto.
please check log below.
after the log display in terminal, all of sikuli are stop to continue work.
could anyone advise?

log:
Executing 9 slide(s)
Slide 1 of 9
ParallelAction{actions=[RetryAction{child=TargetAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image01.png, x=(0.10,0.16), y=(0.12,0.16)}}}]}

Slide 2 of 9
ParallelAction{actions=[RetryAction{child=TargetAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image00.png, x=(0.53,0.82), y=(0.22,0.26)}}}]}

Slide 3 of 9
ParallelAction{actions=[RetryAction{child=TargetAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image05.png, x=(0.86,0.92), y=(0.93,0.97)}}}]}

Slide 4 of 9
ParallelAction{actions=[RetryAction{child=TargetAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image03.png, x=(0.45,0.58), y=(0.90,0.95)}}}]}

Slide 5 of 9
ParallelAction{actions=[RetryAction{child=AssertExistAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image04.png, x=(0.02,0.98), y=(0.21,0.65)}}}, RetryAction{child=LabelAction{text=Exist}}]}

Slide 6 of 9
ParallelAction{actions=[RetryAction{child=TargetAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image04.png, x=(0.48,0.55), y=(0.57,0.61)}}}]}

Slide 7 of 9
ParallelAction{actions=[RetryAction{child=AssertExistAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image02.png, x=(0.04,0.97), y=(0.19,0.52)}}}, RetryAction{child=LabelAction{text=Exist}}]}

Slide 8 of 9
ParallelAction{actions=[RetryAction{child=TargetAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image02.png, x=(0.45,0.58), y=(0.90,0.95)}}}]}

Slide 9 of 9
ParallelAction{actions=[RetryAction{child=TargetAction{target=ContextImageTarget{image=file:/var/folders/dc/xnkydjn54mg2gjwf_bg7hmr80000gp/T/1392006584579-0/download5817732399058636051/ppt/slides/../media/image04.png, x=(0.02,0.19), y=(0.01,0.07)}}}]}

[whalen-enterprises]

I have the same problem running Sikuli Slides v1.5 on Windows Vista Service Pack 2 32-bit. No matter what I do SIkuli Slides never exits. I'm using a PowerPoint slide pack.