Upon activation WordPress says, “Plugin does not have a valid header”. Solution that worked was to check the author’s header against the WP Standard Plugin Information http://codex.wordpress.org/Writing_a_Plugin, whereupon I found the author had not included a license spec.
Using the arbitrary example given on the codex page above, I edited the last line of the header in plugin-organizer.php to read, “License: GPL2”.
Viola! successful activation! 🙂
If the author wishes to use a different license, then perhaps an update of the plugin is in order.
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