You have the Ensign #f contract on. They seem to have rolled over to the Sep. contract over the weekend (from what I can tell from your chart). Trading, though, has not yet rolled over. This explains both the gap on your charts, and the lack of volume. As of 8:45est June has traded 1669 contracts, and Sep. only 164.
Thanks...that did it...might explain my complaint late Friday too. Haven't been trading the 6E very long, now trading it in addition to the ES. I remember about 4 years ago I got all messed up on the ES rollover too when I first started out.
Rollover in the CME currency futures begins Monday and continues this week. Normally takes 2-3 days, until September volume exceeds June volume. Technically, June contracts are tradeable until 9:16 CST on Monday June 13th (if you like living on the edge...) http://www.cme.com/trading/prd/fx/eurofxovrfut12157.html