I finally got it to snap in! It's a super tight fit.I'm having the same problem with their new Microshell Folio (http://www.marware.com/microshell-folio-case-for-the-new-ipad).
I can click the new iPad into either the lower left corner OR the upper left corner, but not both at the same time.
Not only that, the lid's sleep/wake function doesn't work.
I like the potential of this case, so hopefully Marware will offer some options. I've contacted Support.