With pref set to use plain text mail, the compose window doesn't fully draw (background doesn't show up), and the body can't be typed in. The console window shows this after the "new msg" button is clicked: initalizing the editor app core JavaScript error: uncaught exception: Component returned failure code: 0x80004001 [nsIEditorShell.wrapColumn, {file: file:////mozilla/6_14/package/chrome/messengercompose/content/default/messengercompose.xul, line: 71}] This is on the June 14 Linux build (from sweetlou). It worked on Friday (Jun11). I'm downloading Mac right now to check it, but that may take a while...will add a [PP] to the summary if it turns out to be just Linux....

sfraser should have fix this problem last Friday night, I will check it to be sure...

Due to this bug, I cannot test Japanese mail send which is currently working only under Plain text mail. I accordingly se the severity level to blocker. There is also an M7 bug verification riding on this bug.

I have checked in a fix for catching the execption and making the compose work in plain text. But ender has a problem with setting the wrapColumn (#8143) that makes the wrapping broken.

QA: if you want to be able to test plain text today and don't wait for tomorrow's build, just remove the line "window.editorShell.wrapColumn = msgCompose.wrapLength" in the file MsgComposeCommands.js.

Just for neatness and statistics' sake, I'm changing the platform to "all," since I confirmed its existence on the Mac, too.

*** Bug 8132 has been marked as a duplicate of this bug. ***

Verified fixed, 6_15 builds.