the sreenshot may show where the error occurs.
Screenshot from 2012-08-17 14:03:53.png (image/png), 29.82 KB, created by lnie on 2012-08-17 06:41:58 UTC
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Creator: lnie
Created: 2012-08-17 06:41:58 UTC
Size: 29.82 KB
Actions: View
Attachments on bug 849032: 605089