ACL Get Errors with the colour effects

[danoptic]

I get errors when calling
camera1.ColourEffect = "BLACKBOARD"
camera1.ColourEffect = "POSTERIZE"
camera1.ColourEffect = "SOLARIZE"
camera1.ColourEffect = "WHITEBOARD"

Error Messages:
Local: last exception java lang.runtimeexception: setarameters failed

All the other colour efects work fine.

code
Sub mnuSetEffectAqua_Click
camera1.ColourEffect = "AQUA"
End Sub
Sub mnuSetEffectBlackboard_Click
camera1.ColourEffect = "BLACKBOARD"
End Sub
Sub mnuSetEffectMono_Click
camera1.ColourEffect = "MONO"
End Sub
Sub mnuSetEffectNegative_Click
camera1.ColourEffect = "NEGATIVE"
End Sub
Sub mnuSetEffectNone_Click
camera1.ColourEffect = "NONE"
End Sub
Sub mnuSetEffectPosterize_Click
camera1.ColourEffect = "POSTERIZE"
End Sub
Sub mnuSetEffectSolarize_Click
camera1.ColourEffect = "SOLARIZE"
End Sub
Sub mnuSetEffectWhiteboard_Click
camera1.ColourEffect = "WHITEBOARD"
End Sub