I convert it with the ST9 MP8 without problems, then, when I tried to open it the program shows and error:
The output file does not exist or does not have writing permition. Select another output file. (Directly translate from Spanish "la carpeta de salida no existe o no se dispone de permisos de escritura. Seleccione otra carpeta de salida").
It happens with all my parasolid files and I dind't change any file name.