Hmm, you must have hard fail turned on for certificate revocation checks. Not sure why our OCSP stapling seems to have problems. What OS and Firefox version are you using?
It fails here with Firefox 31.0a2 (Aurora) on Ubuntu.
Same with me - Aurora (31.0a2 (2014-05-27)) on OS X.
We cleaned up our OCSP stapling config. Can you try again?