Whenever I try to access it, I get the following:

Warning: Class 'Diff\Differ\CallbackListDiffer' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 20

Warning: Class 'Diff\Differ\Differ' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 21

Warning: Class 'Diff\Differ\ListDiffer' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 22

Warning: Class 'Diff\Differ\MapDiffer' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 23

Warning: Class 'Diff\Differ\OrderedListDiffer' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 24

Warning: Class 'Diff\Patcher\ListPatcher' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 26

Warning: Class 'Diff\Patcher\MapPatcher' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 27

Warning: Class 'Diff\Patcher\Patcher' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 28

Warning: Class 'Diff\Patcher\PatcherException' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 29

Warning: Class 'Diff\Patcher\PreviewablePatcher' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 30

Warning: Class 'Diff\Patcher\ThrowingPatcher' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 31

Warning: Class 'Diff\DiffOp\Diff\Diff' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 33

Warning: Class 'Diff\DiffOp\Diff\ListDiff' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 34

Warning: Class 'Diff\DiffOp\Diff\MapDiff' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 35

Warning: Class 'Diff\DiffOp\AtomicDiffOp' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 37

Warning: Class 'Diff\DiffOp\DiffOp' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 38

Warning: Class 'Diff\DiffOp\DiffOpAdd' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 39

Warning: Class 'Diff\DiffOp\DiffOpChange' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 40

Warning: Class 'Diff\DiffOp\DiffOpRemove' not found in /var/www/vhosts/spheredev.org/wiki/extensions/Diff/Diff.php on line 41

Fatal error: Class 'DOMDocument' not found in /var/www/vhosts/spheredev.org/wiki/includes/cache/LocalisationCache.php on line 650

I couldn't find any mention of it being MIA in the Wiki posts so I figured I'd mention it. If it's known and abandoned, that's fine then, you can just wipe my post from existence haha. 

It's been like that since the recentish server upgrade. You might have noticed the Spherical front page itself isn't looking too great either. Oh, and all email functions seem to be broken, so forum account verifications and PM notifications aren't being maield out.

I contacted NEO about this like a month ago, and he did respond back then about getting it fixed, but nothing since then. Also no response to a more recent email I sent him (about the new front page I'm making)... Will try contacting him again.

Sense, this makes. Thanks DaVince!

Should someone (me?) create a wikia.com wiki until the main wiki is usable?
sphere.wikia.com is taken but spherical.wikia.com, sphereengine.wikia.com and spheregameengine.wikia.com are not.

Should someone (me?) create a wikia.com wiki until the main wiki is usable?

Yes if you would please, I've certainly use to reference the wiki-page all the time
But I have been using the Web Archive's Wayback Machine for now

Alright, will do. I'll use both the Wayback Machine and some of the documentation that I have for Sphere 1.5

which name should I go with? sphereengine, spheregameengine, or spherical?

I would say Spherical, since at this point Sphere is not just a game engine but an entire development toolchain (Cell, SSJ, soon-to-come Majin...).

Alright, Spherical it is. Though I've always considered those to be a part of the Sphere "engine"

For example, doesn't Unity have a toolchain? Yet it's still referred to as the Unity Engine.

Alright, here it is!

http://spherical.wikia.com/wiki/Spherical_Wiki

I'm late now, but I would not use Wikia if I were you since they don't understand the concept of a community. The moment we move the wiki back to this site, they'll start complaining about any messages we might leave about the community having moved back, taking a sort of ownership over a dead community. (I've seen this happen several times, in fact.)

For the time being, I mailed Neo again. Maybe I should contact casiotone instead though.

Neo responded that he's been quite busy, so now I've emailed casiotone about the site issues.

Sphere wiki is alive 

Sphere wiki is alive 

Hurrah for casiotone! 

I'm late now, but I would not use Wikia if I were you since they don't understand the concept of a community. The moment we move the wiki back to this site, they'll start complaining about any messages we might leave about the community having moved back, taking a sort of ownership over a dead community. (I've seen this happen several times, in fact.)

Damn. Oh well, I didn't really add that much to it. I just added a logo and some categories but nothing else.