We are also experiencing this, too. The timers show up as a broken image.

I've noticed this lag in the seconds changing, too. If you compare to an actual clock, the seconds are much faster than the timer in the email. It's almost like for the 1 second on the timer, it's 2 real seconds. I also noticed that when you have multiple timers in an email, they all are counting at a different pace, it's like they are a half second off from each other.

I receive the error as well. Please fix it soon.