Did your game come with dice? I know at the WBC I picked up my copy and the dice and disruption X's were not in the sealed game because they didn't make it into the first batch that printed. Possibly you got one of those copies. L2 will probably get you out the missing parts once they get back to you.
In the short term, they seem to be ceramic floor tile separator X's, painted red on one side and white on the other. If you wanted a quick alternative while you await a reply from L2.
That's exactly my case, I'll check for the tile separators.