I just converted a .swf video file to an mp4, because I saw that it was one of the acceptable formats for wordpress.com. When I attempt to upload the mp4 file to my page, it is grayed-out and I cannot select it for uploading. Please let me know if I need to do something else, or if the videopress upgrade is required for me to move forward. This is rather urgent for me to resolve.
The blog I need help with is carrietestblog.wordpress.com.