I get 30 errors/warnings same as Arthur does.
It's definitely in the code. The table is default code from the program tool that creates them. Just open that tool, create a 2 x 2 using Table Designer, no settings at all added just let it enter the 2 x 2 and insert it into the "body" of a blank new page. Don't change anything at all and it will give those errors. I've done it 3 times in a row and it happens each time so it's definitely a problem.
Arthur did say that CC is aware of it and I'm sure they will get it all worked out guys so I wouldn't worry about it too much.
@ Arthur: If you need some assistance getting a table working just let us know here and we'll be glad to get you going on it if you haven't already. The errors are mostly just because the styling is "old school" and needs to be updated for the most part. Still a bit confusing as to why parts that are saying errors for the blank page don't say errors on my page, but maybe I'm missing something too who knows lol. Hollar if you need some help