Having trouble uploading the oam file to my Muse website.

I keep getting error messages about uploading the Edge Animate files I made, such as:

�Error:

Error uploading file jquery-1.8.3.min.js. There was no response from the server. Check your network connection, and try again. If this problem persists, try again later.

or:

Error uploading file arrowmenudown.gif. Click Resume to try again. If this problem persists, try again later.

I am not aware of any such file- arrowmenudown.gif. It is not in the Library. Where do I find it?

Thanks