My codeigniter app suddenly broke today. I didn\'t work on the upload code and when I tried to upload an image today I suddenly got \"The filetype you are attempting to upload i
Not sure if this helps, I had this problem only on my Windows Dev Machine running on a test server on local host, on my live web hosting it worked fine detecting mime types.
I had a quick look at the upload library itself, and I found that you can just stick a * in the allowed types to allow anything.
Don't think this was documented anywhere in the manual, but sorted the problem for me as I just wanted to get my script up and running locally to do some work on it.