Filament Start Code Problem

[XeMurder]

Lately, whenever I try to slice any model for my Comgrow T500, using the manufacturer's recommended filament start code, the model generates somehwere miles away from the plate, with a long line of filament trailing away towards it, and turns a 40 minute print into 3+days.

The code is this:
G28
G90
G1 X0 F3000
G1 Z0.400 F600
G1 Y0 F3000
M400
G91
M83
M140 S[bed_temperature_initial_layer_single] ;set bed temp
M104 S[nozzle_temperature_initial_layer] ;set extruder temp
M190 S[bed_temperature_initial_layer_single] ;wait for bed temp
M109 S[nozzle_temperature_initial_layer];wait for extruder temp
G1 E25 F300
G4 P1000
G1 E-0.200 Z5 F600
G1 X150.000 F3000
G1 Z-5.00 F600
G1 X100.000 E24 F1800
G1 X100.000 E16 F1800
G1 Y1 E0.16 F1800
G1 X-100.000 E16 F1800
G1 X-100.000 E24 F1800
G1 Y1 E0.24 F1800
G1 X100.000 E24 F1800
G1 X100.000 E16 F1800
G1 E-0.200 Z1 F600
M400