TOPIC: Backend template being dropped

Did the upgrade from Joomla 2.5 to 3.4.5
Everything went as it should, especially as I actually rebuilt the site, rather than upgraded.
Whilst the site was on a subdomain being fixed, it all worked.
Now, I moved it to the main domain position, and it almost works.

Backend of Matukio is not being "nice"...
When I go to Categories, this is what I see:



Other positions show things as they should be:



When I turn Error Messaging to Maximum, it states at the bottom of the page:
Fatal error: Class 'XMLReader' not found in /home/P/ptkno/www/libraries/joomla/feed/factory.php on line 39

I see someone mentioned this on a Support ticket, saying it was a disabled xmlreader module in hosting config.

Hm... everything worked fine here on the J2.5 platform, and on the J3.4.5 subdomain...?

Hey Nilsy,
Go to System -> system information (index.php?option=com_admin&view=sysinfo) and then go to PHP information. SEarch for xmlreader - do you see it listed on that site? Then go on your 2.5 site and look for the same thing.

Chances are on the subdomain you are missing that PHP module.

Regards,
Daniel

The 2.5 version is now gone...
But, on the 3.4.5 version I can see in the first big block called Configure Command:
'--enable-xmlreader=shared'

However, further down the list, I cannot see the xmlreader XMLReader enabled that is on other sites...
Any way to get that working??

Ok, relax everybody, no panic!
Problem solved...
I saw this is available through the PHP settings on the server, through the cPanel. Clicked the reader to activate, and ta-da, worked.
Now, why wasn't it already activated, as it has been previously... not only on this site, but also every server I have used... ever...

Thanks for letting us know what it was! Hope that this would help other people running into the same issue.

Why it wasn't activated in the first place? Because someone decided that it doesn't make sense to activate it