jkoelker,
How many stacks are you seeing this message on? Can you confirm that they are running 7.3.0.1 like you had in your previous post? There was an issue in previous releases which we addressed in 7.2.2.2 but you would have other symptoms like being unable to save the configuration on the switch.
Just to verify, can you login to the CLI and issue "show image version member all". That output will give you a breakdown of the two software packages on each switch. If each member shows "**Default boot**" next to the new image you uploaded via the GUI you should be fine because as I recall with the previous bug, the image wouldn't appear at all.
Time permiting, can you re-upload the image via the GUI a second time overwriting the partition you previously upgraded and see if the message returns again?
Best regards,
Madani