To recreate: 1 - Remove or change all 'Adult' patron categories 2 - Find or create a 'Child' patron whose age is above the category limit 3 - Go to patron details 4 - Click 'Update child to adult patron' 5 - Internal server error
I fixed this one on bug 20226, but it will not be backportable.
Hmm, what would be your prefered solution here Nick.. to remove the button entirely as it is nonsensical?
*** This bug has been marked as a duplicate of bug 20226 ***