casey@yaoguai:~/factor$ /home/casey/factor/factor -i=factor.image
Error in thread 23 (UI update, [ self ui-thread set-global update-ui-loop ]):

An error occurred while drawing the world T{ world f ~array~ ~array~ f f ~vector~ ~array~ ~debugger~ t t....
This world has been deactivated to prevent cascading errors.
gl-error
function f
code     1280
string   "Invalid enumerant"

(U) Quotation: [ set-namestack init-catchstack self quot>> call -> stop ]
(O) Word: update-ui-loop
(O) Word: update-ui
(O) Word: redraw-worlds
(O) Word: draw-world
(O) Word: (gl-error)
(O) Method: M\ object throw
(U) Quotation: [
        63 special-object error-thread set-global
        continuation -> error-continuation set-global
        [ original-error set-global ] [ rethrow ] bi
    ]