I tried to change my photo on Twitter 24 hours ago, and ever since all I get is a flashing line thing. I've signed in and out about 20 times, rebooted the computer and it's STILL doing it. I daren't tweet anything, as it will drive people mad and I'll lose followers.
closed as too localized by Eight Days of Malaise, phwd♦ Feb 1 '12 at 19:32
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There was a site issue that was marked as resolved on Dec 31st maybe it also affected photo uploads.
If this is still a problem consider contacting Twitter @support