After my update, I couldn't open the Calendar, or Battery Saver, or Facebook. I ended up doing a factory reset, which was much, much, much faster than with 8.0. Everything is working now, but it was a pain to log into all of my apps again. If you do this, be sure to force a backup first. BTW, it retained my Start Screen layout.
I just checked my 520 and I have the Calender, you should try resetting your phone for a fix.
After my update, I couldn't open the Calendar, or Battery Saver, or Facebook. I ended up doing a factory reset, which was much, much, much faster than with 8.0. Everything is working now, but it was a pain to log into all of my apps again. If you do this, be sure to force a backup first. BTW, it retained my Start Screen layout.
