Error

[Denis]

Today printing detail received such a message Error: GCodes: Attempt to read a GCode unsigned array that is too long: M84 P3 E0:1 I use the latest version, RC4 What can this mean?

[dc42]

It means you have only one extruder configured but you are providing two E values.

[Denis]

I don’t even know how to generate code for two extruders. I sent a file from simplify3d to print. On the second E I have a second axis Z

[dc42]

Have you checked your slicer end print script, to see if it includes that M84 command?

[Denis]

I looked print script. M84 is used at the very end.
M117 Layer end
M104 S0; turn off extruder
M140 S0; turn off bed
G91; Relative positioning
G1 Z20 F9000
G90; Absolute positioning
G1 X160 Y270 F9000
M84; disable motors
M106 S0
M300 S2000 P500

My mistake was at the beginning of printing.