Is there something I can do to set a breakpoint on a function defined in a static file?
You are absolutely correct. It is application/octet-stream.
I am using 4.0. I can assign the Application. And the Character Set. But I see nowhere to assign mime type after deleting and trying to upload.
However I saw another message here that referenced that IE caused the mime type to be application/octet-stream and that Firefox would work correctly. I uploaded in Firefox.
All is right with the world now!