i've been trying to upload an mp4 video to a 'tweet' i keep getting an error message:
"Cannot read property 'code' of undefined"
this same video was uploaded to facebook no problem. i've rebooted, closed browsers, changed browsers, all to no avail, but twitter just doesn't like it! there are loads of others with the same problem (given a quick search)
so this is just a rant ... dear twitter, no wonder you are losing real users in big numbers, if you can't even process short (like 10 second) video uploads, the you don't even deserve to be in the game!