"Connection Error" on attempting wifi connection

I get an “ERROR Printer Connection error” when attempting to connect via wifi.

The printer doesn’t show up in refresh, when I attempt via IP I get the error above. The printer is associating with the proper SSID, and taking a IP via DHCP, with appropriate gateway and subnet mask. It answers pings.

I thought it was first a issue with authentication to the wifi network, but it’s not, it’s getting an IP without issue.

OSX running 2.2.2 build 1186 of cetus 3d app, and the printer is v356.

Any suggestions?