I've got an object, and want to work on mirror modifyer with it, but I have first to change it's origin point. So I put my 3D cursor where i want to set the new origin point. But when i do: Object/Origin/Set Origin to 3D cursor the origin point doesn't move.
Is there a way to unlock this?
Edit: and I found that in the same scene I've got 2 objects, one I can move in object mode, and this particular one I cannot move it neither can I select it (in object mode)