This has been an issue for as long as the Drop Menu has been aroung - updating Menu Items is prone to lock up AE, amongst other strange happenings. On previous occasions, I could use Task Manager to Force Quite AE but this time, even this doesn't work and rebooting is the only option!!!
I've been using AE for over 25 years and have had to reboot due to a bug. This Drop Menu has been a constant horror show. Errors/Issues can easily occur if you copy/paste within the Input Field in the menu. And doing this while updating the items list is more likely to cause issues than when first adding actual item names. This is quite horrific.
UPDATE - restarted Task Manager and managed to Froce Quit AE.


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