Thanks make that fixed it for me regarding dof circle & arc sides etc. I really thought i was going mad or that sketchup now was different. I was even hunting for a guilty plugin. Let's hope an update patch will soon fix this.

i like rspierenburg's technique, i do it similarly

I was able to look at Make's scene, I was unable to reproduce the crash running OSX Lion, SketchUp 2013, and our latest nightly build. gspalding - sorry you're having trouble on the CG forums, but you don't have to worry about jumping through those hoops to report a bug. Just send us an email: vfswip@chaosgroup.com will submit to our bug tracker, which we use exclusively for tracking down and fixing bugs in V-Ray for SketchUp. Forums and email aren't used to track/fix bugs at all, so if you only wanted to report a bug, there's no reason to even post about it on any forums at all, because Joe (the other developer) and I don't use those forms of communication for that purpose. If you have steps to reproduce the issue, or an example scene file that can be used to reproduce the issue on our machines, please send in a bug report so we can fix this. If the scene is too large, just start deleting things until it's about 10mb in size, and then send it along. The less complex a scene is, that still demonstrates the issue, the better.

suggest uniting the topics: http://sketchucation.com/forums/viewtopic.php?f=322&t=53444

In response to that old thread: No, we do not handle the way SketchUp on Mac handles multiple SU instances being open at the same time... it will cause scene corruption, crashes, and other horrible things to happen... You get 1 SketchUp instance only, Thomthom's utility probably won't do any good in this instance at all. Just don't do it. One SU window only on OSX if V-Ray is loaded. In response to this thread: I have no idea what that white dialog is, and I am unable to reproduce it so far on my own machine.

First, always get rid of any symetrical pattern, all that is symetrical can be cut in 2 and reassembled later ...

I'm using V-Ray with SU V8.0. What's more I'm using the second-to-latest version of V-Ray, because I find the delay on SU start-up to be unacceptable with the latest V-Ray. You just need to make sure that, when installing V-Ray, you change the default installation folder from SU7/Plugins to SU8/Plugins. Edit: I see Thom has already mentioned this...and that you're on a Mac, but I'll leave this in place to reinforce the message for other readers.

No,it hasn't changed. A component can only have one gluing/cutting plane at a time (since the axis szstem defines it and there can only be one axis system at a time). There are workarounds but not an ultimate solution.