Oh, that's probably a simple user error...
Make sure of 3 things...
If you're using an applymovement script, make sure the last movement on the apply movement list is 0xFE...
After the Applymovement command, make sure to have a waitmovement command also... like waitmovement 0x0
Finally, if this is a green 'S' tile in A-Map, be sure to set the var number and var value to 4050 and 0030 (Var Number is 4050, and Var Value is 0030...