The package could not be installed. No valid plugins were found.

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  1. Unpack the download package called justified-image-grid-premium-wordpress-gallery.zip on your computer.
  2. Upload justified-image-grid.zip which is the actual plugin to install.

It's currently packaged this way so the documentation PDF and the unminified JavaScript source files (in the unpacked justified-image-grid folder, next to the ZIP) do not get installed. For more information, check out the following links:

This troubleshooting fix was posted in General use on June 17, 2015