Web to Host Control Cache Error

Hi,
I am getting an error when I try to launch the BlueZone application as a desktop client. The image is shown below. BlyeZone is an emulator either Web to host or desktop terminal. Now the desktop is the one showing up the error.

Error message:
Error 404 caching http://poplar.renex.com/desktop/bz3270/desktop.ini from server.
