MMU3 errors at initial purge  

MMU3 errors at initial purge

I'm currently trying to print with the MMU3 on the MK4. Once the last color is done with initial purge, the printer beeps and just stops. It literally just sits there doing nothing. 

Here's the relevant Gcode for the print where it seems to be having the issue. Right around the "CP Priming End" portion

I'm running the most recent version of Prusaslicer

G1 Y36.260 E0.0190

G1 X230.000 E1.6818

G1 X229.250 Y36.760 E0.0343

G1 X185.000 E1.6818

G1 X185.750 Y37.260 E0.0343

G1 X229.250 E1.6533

G1 X185.750 F7200

;WIDTH:0.5

M220 R

G1 F18000

G4 S0

G92 E0

; CP PRIMING END

;------------------

G1 E-.7 F2100 ; retract

M300 S800 P500

M1 Remove priming towers and click button.

M107 ; disable fan

;LAYER_CHANGE;

Z:0.2

;HEIGHT:0.2

M486 S0

M486 S-1

G1 X109.763 Y178.841 F18000 ; move to first layer point

G1 Z.2 F720 ; move to first layer point

G1 E.7 F1500 ; ; unretract

M486 S0M204 P500 ; adjust acceleration

;TYPE:Perimeter

;WIDTH:0.499999