Setting switch up standalone with a DHCP server

My company is looking at moving from Cisco small business and Catalyst switches to Netgear M4300 for our AV over IP needs.  Typically we use a standalone switch or this, but enable the DHCP server on the switch to hand out IP addresses.  I have been trying to configure our office M4300-28G-PoE+ as a DHCP server, but when I do, I appear to lose connection to the switch.  I am connected over the OOB port (192.168.0.239) as well as the USB console port.  I have set my management VLAN to 192.168.1.1/24.  A added a DHCP pool called "Devices", with a network address of 192.168.1.0/24.  As soon as I press "apply" on the web interface, the DHCP Pool "window" on my browser remains, no matter what setting I select.  In addition, my console connection locks up.  What am I doing wrong?