Backup not registering. 360 claims backup not completed even after it is completed!

Recently, out of the blue, I started seeing a red X on my 360 tray icon claiming my system status is "At Risk!" because "Your backup has not completed recently. Please backup now or change your backup settings."

 

red x.jpg

 

This is despite the fact that I have indeed run my backup (several times) and it shows the backup as completed, yet I still keep getting the red X and the "At Risk" warning!

 

at risk.jpg

 

Any help with this issue would be appreciated!