Can't Upload Documents

Hi,

I am getting an error each time I try to upload documents in pre-existing and new folders for the TRANSFORM SC project.  It indicated a yellow triangle error that says HTML error--Using runtime HTML?  I have also tried a variety of file sizes and types to ensure it wasn't something associated with a particular file or file type.  I was going to attach a screen shot of my problem, but I have the same problem on this screen uploading a file as well.  Can you advise me? Thanks in advance, Sarah