What version of Sketchup is required to use SketchUcam? I'm running Pro 6. I know I should upgrade but I can't justify the expense yet.
If you don't always need the extra features of the Pro version, you can always install the newer free version along side the older one. The two will coexist peacefully. I have 7 Pro and (free) 2014 on my computer. When necessary, I pull the .dwg files into 7 Pro, save them down, and then open them in 2014. It's a bit of a pain but the newer version has some features that are very nice to have.