Hi. I have a similar problem.
I can't upload any image or file. I've set 'uploads' CHMOD for 777 and I think i did everything right, but still, when I try to upload any file or image, and after pressing 'OK'... nothing happens. There is no even any error message. No image appears, and i don't know how to slove this problem.
Assuming you've changed the permissions on the directory correctly I'm not sure why it's not working. If you send me the details to access the server I can take a look at it to see if I can find out the problem.