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[RaiMan <question239950@xxxxxxxxxxxxxxxxxxxxx>]

Question #239950 on Sikuli changed:
https://answers.launchpad.net/sikuli/+question/239950

    Status: Open => Answered

RaiMan proposed the following answer:
"hangs" means what? Any symptoms, that could help?

Sikuli scripts usually do not hang on themselves. 
Mostly it is some infinite waiting for an image (explicit with FOREVER) or via a loop, that is designed to run until something gets visible or vanishes.

If this is not your case:
what is the script doing in this moment? any idea?

Without any changes to the script, you could put -d 3 on the command line at the beginning before the -r 
This would output more details of what Sikuli is doing and might help.

--- final possibility (from the Python docs):
Popen.wait()
Wait for child process to terminate. Set and return returncode attribute.
Warning This will deadlock when using stdout=PIPE and/or stderr=PIPE and the child process generates enough output to a pipe such that it blocks waiting for the OS pipe buffer to accept more data. Use communicate() to avoid that.

Now that I have read this: seems to be the most probable reason ;-)

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