How to stop script while running in InDesign CC2015?
How did you started the script?
With a double-click from InDesign's Scripts Panel?=> Force quit InDesign.
Or did you start it from the ESTK (ExtendScript Toolkit)?
=> Try to stop it with the controls of the ESTK.
If that will not work, because the ESTK is not responding => Force quit InDesign.
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