Device unavailable - (%ERR_DEVICEUNAVAILABLE) - You tried to 
For example, opening COM1 on a system without a serial adapter or modem, 
 or attempting to use TCP/IP 
 or UDP/IP on a machine without 
 Winsock 2.0 (or better) installed.  Also, 
 trying to attach to a graphic or printer 
 that is not available will cause this error.