Error Message and Crash When Attempting to Use Wielded Wand
This requires the the "Zap_Wands_In_Hand" configuration variable to be set to false. Attempting to 'U'se a wielded wand when you have another wand in your inventory produces the message "Trying to remove a non-existent item ('wand of trap creation (9 charges)')" and the program closes. Attached save and error files from r65. The same error also occurs on the steam version.
Attempting to 'U'se a weilded wand when you don't have any other wand in your inventory produces the message "You don't own any wands", which doesn't make much sense (but doesn't cause a crash).