OK so I have done all the steps to install the single player commands and world edit for 1.6.2 but when I load it on a single player world then when I left click it breaks to block but marks the spot but when I right-click then it just ends up not working. Some other commands for single player worldedit doesn't work and when I try to do for example /suicide then it only has the single player commands and not the minecraft vanilla commands too. Someone please help.