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Can not send email after upgrading to 45.0. SOLVED caused by Check and Send Add-on

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I upgraded to Thunderbird 45.0. I have the Check and Send Add-on. After upgrading I could not send an email until I disabled this add-on and idea why?

I upgraded to Thunderbird 45.0. I have the Check and Send Add-on. After upgrading I could not send an email until I disabled this add-on and idea why?

Modified by Wayne Mery

Chosen solution

I don't know why, but I did read that another user reported problems with it following an upgrade, so I don't think you are alone. Maybe the author of the add-on hasn't upgraded it yet to reflect the recent changes in Thunderbird. That's just a guess, but it often happens with add-ons ... they take a while to catch up.

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Chosen Solution

I don't know why, but I did read that another user reported problems with it following an upgrade, so I don't think you are alone. Maybe the author of the add-on hasn't upgraded it yet to reflect the recent changes in Thunderbird. That's just a guess, but it often happens with add-ons ... they take a while to catch up.