I don't understand what you mean by register the plugin. I have searched the forums and can find no reference to these commands. Also I have XP not Vista
Yes I have pro version 7.1 All the other plugins and operations are there, but create triangle and add triangle to edge do not appear anywhere in my plugins menu.
In 7.1.1.0 there will be a new function "Download 3D Canvas Extras" which will be located on the Help menu. This will download an installer for these extra plug-ins (also scripts, models etc.)
I thought that was what you were talking about, but I wasn't sure. I ran the commands. They appeared to have been executed, but the plugins are still not there. Yes I am running as administrator. I guess I'll just have to create a three edged face and weld it into position until V7.1.1.0 comes out. Thanks for the help.