It appears I am still having MediaWiki page edit issues on my shared hosting provider. It appears that when you edit a page (can be any page) and insert the wiki syntax for the page. When you attempt to save it, something must be going wrong with the parsing of the content, as the edit of the page will fail as per the screen grab below.
Unable to resolve this, and do not want to waste any more time on resolving it. No errors are even displayed in error logs for the web server itself and the permissions are fine.