calendar syncing

I noticed that this week my google calendars are not syncing. They are set up for email and contacts (via built in gmail set up) and one of my sub calendars will no longer push any events to any of my devices (iphone, ipad, mba or desktop.). The calendar in question shows up on google's website. I have double checked the delegation on www.google.com/calendar/iphoneselector and it is selected. I can edit any other of the calendars and they sync across all of the devices. I have also attempted to subscribe to the calendar via another account and sync that one, but the events still don't show up.

Any advice is apperciated