Not always but fairly often when logging into a MonsterHunt game I get disconnected because of a mismatch with my version of 'spinner' and the one on the server. Now, I don't know what version I have but it's the complete package.
There 3 classes of spinner. The maiden, a massive one that will bite you in ½ or spit venom at you, or throw eggs at you that hatch on impact, along with hurting you, spawning a new spinner. Also jumps like you wouldn't believe! There's a really tiny, SUPER venomous spinner called the widow or something like that, and then there's the common spinner.
It's the common one I see on monsterhunt servers. Nobody ever has maidens running around, either because their version doesn't have it or they figure it's too powerful a bug to have running around.
What version of spinner does most everybody run?