nupg_error_sulo

DoesNotUnderstandError:reportError
        arg this = <instance of DoesNotUnderstandError>
    Nil:handleError
        arg this = nil
        arg error = <instance of DoesNotUnderstandError>
    Thread:handleError
        arg this = <instance of Thread>
        arg error = <instance of DoesNotUnderstandError>
    Object:throw
        arg this = <instance of DoesNotUnderstandError>
    Object:doesNotUnderstand
        arg this = nil
        arg selector = 'at'
        arg args = [*1]
    CVPreset:set
        arg this = <instance of CVInterpolator>
        arg index = 1.0
        var preset = nil
    < FunctionDef in Method NuPG_GUI_Control:build >  (no arguments or variables)
    < FunctionDef in Method NuPG_GUI_Control:build >
        var copy = nil
    Button:doAction
        arg this = <instance of Button>
        arg modifiers = 0
    Button:prDoAction
        arg this = <instance of Button>
        arg mods = 0
^^ ERROR: Message 'at' not understood.
RECEIVER: nil