Jon,
Didja ever hear that maxim about first disconnecting all unnecessary peripherals? I did; but didn't.
After the DL and as my computer was fixin (a Texas term) to restart & install, the restart failed because my external FW drive would not unmount. For me, that had never happened. Black screen with white cursor and FW fan going full speed. After 5 minutes, I was forced to do a hard shut down & restart. After an uneventful boot back to 10.10.2, I unmouted my peripheral (as I should have) and then proceded with the install. After that, all was normal.
Well, there are about a gazillion foreign support languages packages that may need thinning, and DiskWarrior nearly chocked.- the normal 2 minute process took at least 15 minutes.
But after that, all is sweetness and light (and Merlot).
FWIW: I used the Combo updater.
