i need help about lta mode export of 3DS MAX 7 problem

i follow the steps show below:

1)Import WAVEFRONT OBJECT (.O B J)

2)Export Lithtech Model (.L T A / .L T C)
It show:
If you are using Charracter Studio 3, you must be using at least version 3.1.2.
This update is available at Autodesk - Media & Entertainment
Earlier Versions of Character Studio 3 will crash during export.


3)I found that exported file. It was 435 bytes...

and then
i tried to search the Character Studio 3
i cannot found it...
what wrong? or i missing?

PLEASE HELP.