Answered
The Polish forum one of the teachers reported a problem with the Pen tool in GeoGebra 4.2.
Pen writing only Graphics, and writing the Graphics 2 gives an undefined object.
In addition, the problem for him is that the Pen object is inserted by default enabled on Absolute Position on Screen and need for each inserted object is changed.
Is it possible to resolve your problem?
The same problem 
Hi, with 4.2.58, it seems that we have using pen in Graphic2 :
AttachCopyToView[PolyLine[<points>, true], 16,<points> ]
instead of :
AttachCopyToView[PolyLine[<points>, true], 2,<points> ]
Cheers.
Michel
The question raised teacher who leads a lesson using an interactive whiteboard, and students use the tablets.
Thanks, really helpful diagnostics :)
Fixed for next releases.
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