Is the reference to the version of MySQL dump, rather than for the whole database?[/QUOTE]/usr/bin/mysqldump Ver 6.6 Distrib 3.22.29, for sun-solaris2.7 (sparc)
Yes, that was quoted from the utility's help text which you posted earlier. It has no reflection on the version of your database.
The contribution will backup v3.23, v4.x, and v5.x databases, as long as the mysqldump utility installed on the same webserver as your site matches the database engine version.
Perhaps ask your host two questions:
1. What versions of mysqldump are available on your server
2. What is the path where the mysqldump binary resides -- which matches the MySQL version your hosting plan is configured to use.
(ie: maybe your host has multiple versions of MySQL installed, and the default path picked up by the plugin is grabbing the oldest one, thus causing you this trouble.)
If you cannot use the plugin because your server's resources are not up to date, you can easily do backups using phpMyAdmin instead.
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