Comment 22 for bug 411358

I can confirm as well: running thunderbird 3.1.11 on Centos 5.5.

In my case the text was in a perl script attachment someone emailed me that apparently contained the magic string that triggers the "Gecko" popup dialog error with details. In my case the "details" say:

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Bad key or directory name: "/desktop/gnome/url-handlers/s+Frames/command": `+' is an invalid character in key/directory names
Bad key or directory name: "/desktop/gnome/url-handlers/s+Frames/command": `+' is an invalid character in key/directory names
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..which is due apparently to the following text in the perl script:

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        if ( /^\s+Frames:/ ) # remove Frames
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