i am a real noob when it come to forums, but are you talking about having hackslashmine and single player comands (1.2.3) at the same time? i tried to add spc so i could set waypoints and have a house but when i install it and i open minecraft it says updating and it starts/stops at 19/20ths of the bar and just stops. i think some of the .class files have the same name or something so it doesnt work, i havent checked it and im not sure but it definitely doesn't work for me.
any ideas how i can have them at the same time?