Great, it’s seem Gmail issues for some accounts are dues to the cache of Gmail’s server.
If 0.7.8 works, keep it, if not, use 0.7.7, and if 0.7.7 doesn’t works, use 0.7.8.
If 0.7.7 AND 0.7.8 doesn’t works, please complain !
Gmails issues are not solved. A new version will come asap.