Hi Everybody, I recently reinstalled the OS on my "server" to fix a problem I had with ServerX. ServerX talks to HomeGate on my office machine. I also have an older version of C-Gate (v1.5.3 build1103) running on this machine connected to my C-Bus network via a PCI. After my reinstall, I have found that C-Gate cannot open the C-Bus network. I get an error 911 "Can't open: C-Bus interface (no such port):COM1" BUT, the COM port and the PCI are working OK, I tested it with the excellent C-Bus Diagnostic Program. Everything checks out great. Nothing else in this PC has changed, after I reinstalled C-Gate, I copied my config files back into their original locations. What else can I check? In the process of getting things working like my RAID monitor software, ServerX and C-Gate I have various versions of the Java runtime environment installed :- 1.4.1_02 1.4.2_11 1.5.0_05 1.5.0_06 While it's not essential that I have this C-Gate operational, I would like to get to the bottom of the problem. Could it be a Java problem? Regards, Michael.