Getting an error when I try to save a page

I'm trying to add more to the Orcs Must Die Unchained page, but every time I attempt to I get an error when saving.

The page is getting pretty wordy so could it be that I hit some character limit? I have what I want to add saved to a txt file.

It's not just you. I made a minor edit and get the same thing.

I also get the same error when trying to edit Indie Assault. No matter how little or how much I do, I still get the "Whoops" error.

It's because of the quarterly release date. When you're making your edits you need to set the release date again to whatever it used to be before finishing, in that Orcs Must Die page's case Q4, otherwise you'll get an error. Yeah, it's stupid.

What the fish?