With regret but I’m gonna flag this plugin as “broken” for now.
The *plugin* does in fact work, it’s the packaging of it that’s buggered with it being zipped to many directory up that WordPress can’t see the contents:
wordpress/wp-content/plugins/ oomph-clone-widgets/oomph-clone-widgets/oomph-clone-widgets.php
You can manually install it of course and mv down the first directory:
wordpress/wp-content/plugins/ oomph-clone-widgets/oomph-clone-widgets.php
Unfortunately this means that the autoupdate magic in WordPress won’t work for now.
I agree with oneltd. Plugin works perfect you just have to manually install it because its two files deep instead of the normal one. Great plugin.