Cisco VPN :: 2911 / Cannot Install VPN License

I purchased a 2911 router and a 25-pack of VPN licenses (PID: L-FL-SSLVPN25-K9=).I registered the license, and supplied the serial number of my router when asked.I received a .lic license file.When I attempt to install the license on the appliance, I receive an error:
 
% Error: Install failed. UDI L-FL-SSLVPN25-K9=:FTX1542AKJ3 on license does not m
atch any device
0/1 licenses were successfully installed
0/1 licenses were existing licenses
1/1 licenses were failed to install
 
However, the following establishes that the serial number is correct:
  
SFGallery#show inventory
NAME: "CISCO2911/K9 chassis", DESCR: "CISCO2911/K9 chassis"
PID: CISCO2911/K9      , VID: V04 , SN: FTX1542AKJ3
 NAME: "C2911 AC Power Supply", DESCR: "C2911 AC Power Supply"
PID: PWR-2911-AC       , VID: V03 , SN: AZS153303LY