Build 662 - Problem with undo

Hello,

662 looks great! One problem: I was just making extensive edits to a file, then in the middle did a "reformat code" to the entire file, then made some more edits. I started thinking I had a brain fart before the reformat code, so I tried to undo back through the reformat. I was able to undo the reformat, but every undo after that would bring up a dialog saying "Undo?" - "OK/Cancel". When I clicked OK, it would simply undo the undo of the reformat. It looks like the linked list of commands got messed up in the operation somehow and I couldn't undo any more operations. Minor glitch, really.