DeLaCrank on "HTTP Error when uploading image (crunching)"

A friend set up our WP account. I’ve been able to upload all kinds of mp3s til about 2 days ago, when I foolishly hit the ‘upgrade now’ button. I don’t have WP downloaded on my computer. I went to GoDaddy & uploaded 3 songs “the back way” and was able to get one to upload, but I keep getting the http error in the Flash uploader and the “500 error” the other way. This is really frustrating, other than this issue I’ve really enjoyed working with this program. I’m looking forward to your help.