I am trying to duplicate a symbol along a wall in order to create a panel fence with posts... I make the symbol active in the resource browser, select the tool, set up the preferences (using offset and repeat values to replicate my fence panel lengths). I follow the instructions to click on the wall - the manual tells me that a preview of my symbol should appear, but it doesn't. I then follow the instructions to drag in the direction of the duplication. Nothing happens. I have tried clicking and that just changes the prompt to Click on a Wall.
Clearly doing something silly, but if anyone could explain where I am going wrong I would be eternally grateful.
Thanks
T