Ah. The confusion is that you asked about WRML several times... and the format you are using is VRML.
Graphisoft's support for 3D printers seems to be focused on STL format.
You've found a workaround of opening and saving the VRML file in 3DEdit Pro, so you are able to complete your work, right?
You can submit a bug report through the tech support for Sweden.
You can find what other people have said about using VRML format by searching here:
http://www.archicadwiki.com/results.html?q=vrml
Really, no discussion in several years though...
One of the forum moderators
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