hello...

i m using small mini cnc with aspire 9.0 and cnc ucb controller...with lapotop and usb connecting ....my window is 8.1 64 bits
my problems is...

1.when i preview in aspire..toolpath profile run accordingly but when i transfer to machine with gcode...that toolpath profile were error and run not as preview in aspire...this was happen when i used the end mill bit...for v bit its ok..

could some one advise to solve this problems.
tq