I'm working on a system that has two VXI enclosures, and the two are bridged via VXI-MXI-2 boards in each of them. The first one has a GPIB-VXI board in slot 0, and I have a Winodows XP computer connected to that with a GPIB-USB-HS adapter. The problem is that I cannot see any of the boards in the second chassis over GPIB in the Measurement & Automation Explorer. As far as I can tell, everything is configured correctly; the VXI-MXI-2 board in the first chassis is in the last slot and has a logical address of 126, and the VXI-MXI-2 board in the second chassis is in slot 0 and has a logical address of 127. To make things even more confusing, if I put a VXI PC in slot 0 of the first chassis, it seems to see everything without any problems. Do you have any idea why this might be happening? I'm pretty new to working with these systems, so I might be missing something obvious. Thanks in advance.