It seems a server component (PCRE) was updated this afternoon our time, the new version of
which was not compatible with the wiki version we had.

Detail here:
https://www.mediawiki.org/wiki/Manual:Errors_and_symptoms#All_pages_have_no_content.2C_but_when_editing_a_page_the_wiki_text_is_there

'Simplest' fix was an upgrade to a later wiki version.
We have now moved from v1.20 to 1.25

The way extensions are used has changed, most old extensions are not compatible until upgraded.
I have acquired new versions of some, will look into the rest when it's not late on a school
night.
Shouldn't be any show-stoppers for most usage of the wiki.

If you have new wiki issues anywhere, please reply to let me know and I will get to them when
I can.

Cheers, Stephen.


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