These Joomla extensions are no longer maintained or supported. They still work under Joomla 3.x with PHP 7.x, I can’t say anything about setups beyond that. If you would like to continue work on one of the plugins, feel free to use the code under the terms of the GNU General Public License. Find a new name for the plugin and keep the original author’s name in the code.
However, the EasyImageCaption plugin has been continued as Easy Image Caption CK by JoomlaCK. Please visit www.joomlack.fr