muhmuf, marynpaolo,
You may wish to roll back from Yosemite and see whether the issues will be solved.
Weeding out in older plugins seems to have helped some in some cases. It also seems that JAVA Runtime may be involved, for some it seems to help to roll back to an ealier version, for others to update to the newest.
All the above is more or less hearsay so far, with no definite final confirmation.
In any case, there is something to be sorted out by someone.