Recently I use gimp version 2.4, now I using 2.6 version, this day I try using the ‘paths tools’, it seems difference rather than gimp version 2.4 , in version 2.4 I can use “delete” in keyboard to delete an path node but I can not do it on version 2.6. Finally after try and error I know how to delete an paths node on gimp version 2.6. Using “Ctrl+Shift” and click using mouse what node that you want to delete.