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send is inactiv

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After update to 45.0 send button became inactiv. I click on it with no effect.

After update to 45.0 send button became inactiv. I click on it with no effect.

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Please try restarting Thunderbird in safe mode (with themes and add-ons disabled): does that get it to work?

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It worked. EditSender add-on was responsibile. Thank you!