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I have only ever used my posting key and it's saved in my password keychain on my iMac. Below is a screenshot of the error. Thank you for taking time to respond to me.

Screen Shot 2018-07-03 at 9.41.08 PM.png

See the reply from @tcpolymath which may help. Looks like it may be related to this? https://github.com/steemit/condenser/issues/2926

Yes, that's the bug I'm seeing.