We've set up a series of homework assignments that students have to download, complete and then upload using a "Upload a single file" option in the "Add an activity" drop down menu.
When they click the link to upload their assignment, they get the description and an "Upload a file" button. After clicking the button, the text, "Upload a file" appears, the loading .gif image appears along with the "Save changes" button and the "Cancel" button, but the file picker never pops up.
This also happens with the "Advanced uploading of files" option and I can't figure out what's happening. I don't know if the YUI isn't working properly or what but I'm stumped. Any help would be greatly appreciated. Thanks.