This morning I updated all Simplepress plugin upgrades to the latest versions, but the result was that I appear to have lost all forum formatting - see screenshot.

I've checked the error log, and it shows this:

August 29, 2017 10:06 am | spaErrNotice | 1 | php

file: /simple-press/sp-startup/admin/spa-admin-framework.php
line: 400
function: spa_check_warnings
Notice | Undefined index: active

If you need login access to view the forum or back end of the site, just let me know, and I'll PM that to you.

Screenshot didn't load - take two...

Can you try the instructions on this FAQ...

I would, but there's no link to the FAQ you'd like me to try?

Found that FAQ / what to do after a quick search, and resetting the combined CSS cured all woes. Thanks for the help!

Sorry for missing the link! Just checked and it is still in my clipboard waiting!