Using Org mode version 9.2.1 (9.2.1-33-g029cf6-elpaplus), I get an error message when I run org-agenda:
Debugger entered--Lisp error: (error "Wrong number of arguments") propertize("WAITING" nil face org-warning) org-agenda-get-restriction-and-command(nil) org-agenda(nil) funcall-interactively(org-agenda nil) call-interactively(org-agenda record nil) command-execute(org-agenda record) execute-extended-command(nil "org-agenda" #("org-agenda" 0 1 (fontified t) 1 2 (fontified t) 2 3 (fontified t) 3 4 (fontified t) 4 5 (fontified t) 5 6 (fontified t) 6 7 (fontified t) 7 8 (fontified t) 8 9 (fontified t) 9 10 (fontified nil))) funcall-interactively(execute-extended-command nil "org-agenda" #("org-agenda" 0 1 (fontified t) 1 2 (fontified t) 2 3 (fontified t) 3 4 (fontified t) 4 5 (fontified t) 5 6 (fontified t) 6 7 (fontified t) 7 8 (fontified t) 8 9 (fontified t) 9 10 (fontified nil))) call-interactively(execute-extended-command nil nil) command-execute(execute-extended-command) This has only started in the last few days and my init.el file has not changed, so it seems to be something in the latest update. Richard Stanton