Re: [Orgmode] bug? - can't set effort from agenda

[George Pearson]

Another wrinkle on this, related to the priority change (A-Z).  If
I try to set the priority in the agenda by typing a comma, and then
entering the (capital) priority letter at the prompt

Priority A-Z, SPC to remove: 

then I get:

org-agenda-priority: Wrong type argument: integer-or-marker-p, nil

HOWEVER, repeating the comma entry and priority entry again is 
successful.