@unknownuser said: very good! but is or not vray for sketchup? Thanks, Giuseppe! Yes, I am using Vray but it is not the latest version and I therefore can't use certain .vismat materials due to version incompatibility.

Just a final update on the matter. I tried connecting at home this morning before going to work and there was still no luck. I then tried at work and had no problem at connecting to the KT site. A colleague of mine who also uses KT and frequents the KT forums told me that he couldn't connect at home either. So it looks like connecting via a proxy server is at least working for us. Still think its really weird though!?!?!