Solved Updated plugins, crashed site

I can't login, anywhere. And it says: ERROR: mod_kunenalogin: Kunena 3.0 (or later) is not installed on your system!

Yet it was installed yesterday before it all went kaput. I updated to 3.1.1.

And I can't do anything because I can't login to the front or back end

butchjax wrote: I can't do anything because I can't login to the ... back end

Then this indicates that there's something more serious or sinister happening than merely the result of updating some "plugins". This suggests that your site is compromised—a euphemistic way of saying that your site has been hacked—and, perhaps, the best way to escape from your dilemma is to restore your site from the last backup taken before the problems began, accept that you may lose some information in the process, and then move forward.

Good luck.

Ok. Thanks! I'm looking at joomla as well. 810 is assisting me right now and I'm incredibly grateful.

As a matter of curiosity, what version of Joomla were you using before your site crashed?

The latest, 3.4.5 I believe. And the latest of Kunena. We just had it all upgraded and had to fix a bunch of issues to make it all work well.