troubleshooting help uploading .wmv to sites
like vimeo or teacher tube

    I am looking for some troubleshooting tips for an
    uploading problem to video sharing sites like teacher tube
    and vimeo. I created a photo story and converted to wmv
    and then uploaded to the two aforementioned sites. I have
    done this many times before btw. I got error messages at
    both sites numerous times saying my attempt to upload had
    failed because they didn't recognize my file extension.
    both sites accept .wmv files and I have uploaded wmv's to
    both sites before. Please help me figure out what went
    wrong this time...