Following an update to marshmallow, my lg g3 seems to have issues installing or updating *some* apps resulting in error code 505. I've performed a factory reset twice today already but it doesn't seem to clear up the issue. The first reset i used the build in system backup, the second time i didn't use any sort of backup instead downloading everything "fresh" from the Play store. The apps in question are Amazon Music (which is pre-installed and shows an update in the Play store, but won't update resulting in error code 505) and Amazon video from the Amazon app store also resulting in error. Please help!