vismach issues

I am trying to build my machine in vismach, it works fine till i add my stl file, it shows everything except the stl file, the stl file is ascii not binary. here is the code: 
#!/usr/bin/env python3
from vismach import *
import hal
import math
import sys

c = hal.component("simtest")
c.newpin("joint0", hal.HAL_FLOAT, hal.HAL_IN)
c.newpin("joint1", hal.HAL_FLOAT, hal.HAL_IN)
c.newpin("joint2", hal.HAL_FLOAT, hal.HAL_IN)
c.ready()


tooltip = Capture()
toolshape = CylinderZ(30,10,0,10)
toolshape = Color([1,1,0,1],[toolshape])
Aassembly = Collection([toolshape,tooltip])
Aassembly = Translate([Aassembly],0,0,-30)

X=CylinderX(-100,1,100,1)
Y=CylinderY(-100,1,100,1)
Z=CylinderZ(-100,1,100,1)
axes = Collection([X,Y,Z])
axes = Color([0,1,0,1],[axes])

shoulder = AsciiSTL("/home/abdulkareem/linuxcnc/configs/stl/shoulder.stl")
shoulder= Color([1.0,0.5,0.5,1],[shoulder])
Aassembly = Collection([Aassembly,shoulder])
work = Capture()

model = Collection( [Aassembly,work,axes])
main(model , tooltip , work , 100, lat=-75, lon=215)

 

where do i have to post it