am 82a39f4a: Merge "Add some explicit error log messages" into gingerbread

Merge commit '82a39f4aabb5b44801690a95fcf61d4f2ab97a8e' into gingerbread-plus-aosp

* commit '82a39f4aabb5b44801690a95fcf61d4f2ab97a8e':
  Add some explicit error log messages