Error adding platforms to wiki page

I'm trying to add a couple of platforms to this wiki page, but whenever I submit the changes I get an error message saying "Whoops, look like we ran into an error". Other kinds of changes seem to persist just fine. I've been able to reproduce it in Safari 7.0.6 and Chrome 36.0.1985.143, both on OS X 10.9.4.

It's likely because of the quarterly release date. For whatever reason whenever you attempt to make an edit to a page's overview with a quarterly release date, it removes the date and then botches it all up. So, whenever you notice a page has a quarterly release date, you have to make sure to set it back again before you finish your edits. Honestly it can be such a fucking nuisance sometimes that I wonder if it's best we all temporarily skip adding quarterly estimate release dates altogether.

@yummylee: Yep, that was it. Once I specified a month, I was able to add the platforms, then switch it back to a quarterly date afterwards. Thanks!