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Mail unusable since upgrade to Sierra

When I first upgraded my iMAC to Sierra (10.12), Mail would crash every time I tried to select the "Sent" folder. Most other folders could be accessed fine; a few would also cause Mail to crash. Re-installed Sierra, no luck.


Today, Mail started crashing on a few other folders. Then, finally, it crashed altogether and will no longer re-open; every time I try to open the app I get a "Mail quit unexpectedly" dialog and dump. I believe this is the most pertinent information:

Crashed Thread: 6 Dispatch queue: com.apple.root.default-qos

Exception Type: EXC_CRASH (SIGABRT)

Exception Codes: 0x0000000000000000, 0x0000000000000000

Exception Note: EXC_CORPSE_NOTIFY

Application Specific Information:

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSNull length]: unrecognized selector sent to instance 0x7fffb4d7cf10'

abort() called

terminating with uncaught exception of type NSException


Once again I re-installed Sierra, but still cannot open Mail at all. Any thoughts?

iMac

Posted on Oct 4, 2016 2:26 PM

Reply
45 replies

Nov 30, 2016 6:51 AM in response to PTDiMarzio

i feel your pain. I thought it was maybe just me and / or the BT Infinity line i have to my house. But having now installed....outlook (shocking turn of events!) for mac, my email is back up and running again.


well done Apple - by upgrading the OS, your in house mail app is unusable resulting in me moving to a product from your direct competition. good move. one word : testing??!! :-/


To the OP or anyone else suffering, i realise this is not a fix to the problem, but it is a workable solution until Apple resolve the root cause (suspected to be macOS Sierra).

Dec 7, 2016 3:25 PM in response to plinke

YMMV, but removing the entire folder named "Mail" in the Library folder (while holding option with a finder window open, click "Go" from the menu and from the dropdown menu, select "Library") seems to be the remedy for whatever was wrong with my box. This seems to be a problem that is either located in different locations or multiple problems with similar symptoms. I tried many if not all solutions on the interwebs. It has been about 10 days thus far and no subsequent crashes of Apple Mail. Good luck!


User uploaded file

Mail unusable since upgrade to Sierra

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