Firstly, I must say that since moving from AutoCAD to ArchiCAD last year after 7 years of using the prior, not only am I now in no doubt that ArchiCAD is the best drafting / visualisation programme on the planet, but it also has (along with Artlantis) the best support community in the world! Thank you very much to one and all for your speedy and helpful feedback!
Anyway, David, I have created the wall composites that you see on the JPEGs and so the problem is not in there as all of the walls feature the same composite, and the 'enable skin properties' box is already ticked. Neither of which seem to sort the problem but thanks anyway. I guess it is just something I will have to live with when I have multiple walls meeting at varying angles.
Laszlonagy, thanks for the link, but by the looks of it, that workaround would only work if you have a consistent background fill on the walls. As I have a composite fill within my walls, I cannot see ArchiCAD correctly applying this to my busy wall junction. I will try nonetheless and let you know if I am successful.
Thanks,
Paul Griggs BSc (Hons) MCIAT MCIOB
Chartered Architectural Technologist
AC23, i5 3570K Processor, 16gb RAM, NVidia 570GTX Graphics Card, 250gb SSD Drive