Hi there! I am sorry for this question, but I used to simply right click on my mouse and a set of command would show up, including the one which find the center of any objecty (closed curve, solids, mesh). Now this command does not show up anymore… And I really struggle to find it again.
Any help would be greatly appreciated 
Hello - it sounds like a plug-in may be providing that - can you please runs SystemInfo in Rhino and post the results?
-Pascal
Hm - nothing there that leaps out at me … So, is what you are looking for the Cen Osnap? Or the VolumeCentroid command? If you expect a right click context menu and are not getting one, that is is set in Options > Mouse page. I guess I need a little more information of what exactly is not working.
-Pascal
Many thanks for your help Unfortunately I do not have more insights :(. It is same ide as VolumeCentroid except that it was also working for a closed curves…
AreaCentroid
-Pascal
Oh thank you yo much!!!