Hello again,
I have searched the forum here for this problem and it does not appear that anyone else has encountered this issue so I most likely have done something wrong.
I've set up the site (Joomla 2.4.11), it all works perfectly as does the excellent menu, thank you.
I've read the Joomla tutorials about initiating SEF settings, renamed the htaccess.txt to .htaccess and then enabled "Use URL Rewriting" for links on pages and "Search Engine Friendly URLs".
Once done only the Home button works, all other menu options take me to my 404 not found page.
Links on the home page directly work OK.
It's only the menu items that have stopped working.
So as an example, with SEF URLs
OFF, the second menu item looks like this:
localhost/psil/index.php?option=com_content&view=article&id=263&Itemid=4
With SEF URLs
ON, the second menu item becomes this:
localhost/psil/Read%20Private%20Message/products
Why it's pointing to Read Private Message I don't know!
The above tests were carried out on a WAMPP installation for testing purposes but I briefly initiated the same on the live site with the same results.
I'm baffled.
Any assistance gratefully and warmly received.
PS: If I disable "Use URL Rewriting" and only set SEF ON then I still have this problem.