OK I might have missed this discussion so I'll ask the question again. I have used Sketchup for a long long long long time...(ok I'm old, I'll admit it). Now that I have embarked on the dark path know as CNC I am finding that free free version of sketch up wont let me convert to dxf or stl files. I would need the pro version. I found a plugin but when i tried to install it sketchup wouldn't let me and tried to force me to upgrade to the latest version. what am i doing wrong .