Upgraded to El Capitan, now error message

[Jayhawk Raven]

After upgrading to El Capitan, I get this message persistently in mail:

The operation could not be completed.
No other information is available about the problem

Any ideas?

 

[Jayhawk Raven]

I ran disk utility [Restart, Command-R] and no problems were identified.



This error message keeps popping up:

 

[richard2]

Please do the following:

1. Open Terminal.
2. Enter the following:
   
   syslog -k Facility com.apple.mail -k Time ge -3d
3. Include the contents of the Terminal window in a reply to this post.

 

[Jayhawk Raven]

Richard,

Thanks for posting that. I did as you suggested. The log file was huge, but most of the errors seemed to relate to SpamSieve. I upgraded that program, and the error messages stopped.

Thanks again.