Updated to WP 4.4 and sub forums are no longer accessible, getting the Ooops….message

Tried deactivating all plugins, using a default template and still get the same error.

IF I go into dashboard I can actually get to the topics from the backend, but its of no use to my site members

Have asked for my hosting company to reinstall a backup from last 24 hours as my backup failed

MODERATOR EDIT :

There is a SUMMARY of this issue and what to do at the end of this thread (or near it) – to save newcomers having to read the whole thread

[@lindt01 Participant 8 years, 10 months ago]

Hi,

FYI

Perhaps a bit late, but I upgraded from 4.3.1 to WP 4.4.2 and the forum works alright now!

Cheers
Ger