I had the same problem and as of now you have to start off with "Align New Objects to Pixel Grid" turned off BEFORE you create any object (at least for me), bcbecause turning it off after still gave me errors :(, I'm surehoping it's a glitch they will fix?????.
Let me rephrase, it seems to work if you uncheck when the Options panel is visible, but not by checking it off using the pull down menu!