ePMP1000 GUI Radius authentication failed after upgrade to

Cambium C058900A112A ePMP 1000 5GHz Conn Radio Sync FCC Access point with two Cambium C058900C072A ePMP Force 180 5 GHz FCC client radios.

All devices running 3.5.1.  Access Point using Radius authentication for client radio authentication.

Upgrade 1 of the clients to  Client reboots and successfully connects to Access Point.  We are now unable to log in to the web interface of the upgraded radio. client web interface reports "Wrong username or password",  and it sylogs:  

syslog pam_radius(sshd:auth): pam_exec res 1 errno 2.

FreeRADIUS Version 3.0.19 logs:

Info: Dropping packet without response because of error: Received packet from A.B.C.D with invalid Message-Authenticator! (Shared secret is incorrect.)