Millisecond Forums

Hi, third post in a row for me. :)  I'm having an error launching my experiment on the web.  I've done this successfully before I think I'm following the same steps as before but I can't seem to figure out what is wrong.  I have my script uploaded and I'm getting an error saying that the main script can't be opened?!  There is also a corresponding server error so I'm wondering whether there was an issue uploading on the server's end.  Other scripts that I have previously used are working fine.  I've attached the screenshot here.

 As always, your help is much appreciated!  ~Lauren