Python always checks for escape sequences, which start with a backslash (e.g. \n for newline). To be able to use the backslash as a char just double it (e.g. "myfolder" + "\\", becomes "myfolder\"). <img src="smileys/smiley4.gif" border="0" align="middle" /> It works perfectly. I thank you for that.
But now, when I add a 3D box to the canvas, i get this error:
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File "<string>", line 739
class 3DBoxInstance:
^
SyntaxError: invalid Syntax.
and
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Trackeback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'System' is not defined