Thank you TIG for your answer.

Well I checked my securities permissions and they are set to full. I still can't see the files. Weld.rb is visible but does not appear in sketch up

Hi Guys,

I'm a newbie here and i have several problems with my plugins. I installed weld.rd, unfold. curviloft, Bz toolbar and extrusion tools. Everything works fine except for weld.rd that does not even show up in sketch-up.

Then the strangest thing is that the files of curbiloft and extrusion have disappeared from the plug-in folder. I'm a bit puzzled.

Thanks for your help and sorry for my french translated English.

Mathieu