Tested and tested on version 5.6.4 without problems

Description:
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Options to show likes in various locations see image.

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Options
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All phrases can be translated.
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Installation:
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Unzip the zip file inside there are installation instructions
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How to uninstall:
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Go to "Manage Products" in the admincp and delete the product named "product_likescount_by_chicoynano.xml"