Transaction looks successful but file not downloading

Hi, folks,

     I'm trying to put an application (Xerox Free Form Core) behind out BIG-IP front end and am finding it surprisingly difficult.

     When we use the application bare, it will download a file; when we put it behind BIG-IP, it will not. Via tcpdump/wireshark, the transaction looks successful to me: It returns a 200 OK.

     This was unexpected. Any thoughts?

Thanks,

     John A