Comment 7 for bug 948663

To fix this I actually need the full error message, which is unfortunately not part of the stack trace. If you are able to reproduce this crash, please open a terminal, run

  sudo /usr/lib/udisks/udisks-daemon --replace 2>&1 | tee /tmp/udisks.log

and then add/remove/whatever your USB stick or other devices until it crashes with something like "Failed to send polled devices: ...". Once it does, please describe which particular action you did and attach /tmp/udisks.log here.