I am using Uploadify on a fairly large project and so far it's been great. However, one of our users has reported a problem: he is trying to upload a file on Fedora and stumbled upon an error. After adding the famous onerror code (as found here: viewtopic.php?f=5&t=12) he simply gets "error IO: undefined".
This is the first time anyone has had an IO error and the weirdest of all is that, when uploading the same file from a VirtualBox with Windows XP, it works just fine.
My javascript/jQuery/flash knowledge is severely limitied and I simply wouldn't know where to start to debug this. Can anyone help me on my way?