I am trying to get this thing to work, Extrusion Concept I am working with Marlin 1.1.0 RC7. I type in T0 and I comes back with echo:Active Extruder: 0 but when I do the T1 command I get back echo:TInvalid extruder. I don't know if I have the right setup in my Marlin files.

This is a custom 3D Printer built from scratch. I am using the MKS Base v1.5 board. I hav included my Marlin files.

Thank YouConditionals_LCD.hConfiguration.hConfiguration_adv.hMarlin_main.cpppins_RAMPS.h