LG G3 D850 on AT&T. Updated to Marshmallow (6.0) 2 days ago which I'm assuming has something to do with this issue. Anything having to do with editing or creating a contact causes "Unfortunately, Contacts has stopped" to pop up and I cannot edit or add any contact information. I haven't been able to find anything helpful online. I have tried to restart the phone and also went into settings>general>smart cleaning> and I removed the temporary files. If you have any ideas on what I can try next let me know. Thanks in advance.