[Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a3pre) Gecko/20070228 SeaMonkey/1.5a] (nightly) (W2Ksp4) 0. Start Browser. 1. Ctrl+M to start mail Editor. 2. Alt+F4 to close it. 2r. {{ Error: gMsgCompose.getExternalSendListener is not a function Source File: chrome://messenger/content/messengercompose/MsgComposeCommands.js Line: 1078 }} Each time I do steps 1 and 2.

[Mozilla Thunderbird, version 3 alpha 1 (20070228)] (nightly) (W2Ksp4) Same bug: {{ Error: gMsgCompose.getExternalSendListener is not a function Source File: chrome://messenger/content/messengercompose/MsgComposeCommands.js Line: 1056 }}

[Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a3pre) Gecko/20070306 SeaMonkey/1.5a] (nightly) (W2Ksp4) Odd, it (now) seems I can't reproduce with Alt+F4, while I can with Ctrl+W / "File > Close", which is +/- bug 372706.

(In reply to comment #2) Fixing this previous comment, I mixed two bugs: Alt+F4 was only to get the JS error, = this bug, and was still there; Ctrl+W was indeed bug 372706, confirming with SeaMonkey. ***** Duplicate, per bug 372706 comment 18.