Using PHP 5.1.6 (I know that's the reason). What can I do to fix this issue, and if nothing (other than upgrading which is not an option), how do I revert without losing my data?

See the site to see how it's broken.

Thanks.

Sean Goresht wrote: Using PHP 5.1.6 (I know that's the reason)...

To say it's outdated - to say nothing. It's ancient.

If you cannot make your hosting provider upgrade your php version - maybe to change provider?

If not - restore site from backup (hope you made it before updating)

Nope and nope. But I'm pretty sure I can export the content and then re-install and then re-import it. That should work.

I did this, and now the CSS appears to not be working.



Any ideas?