输入是这样的：
TITLE:        LPA of parents'authority legtimacy
  DATA:        FILE IS C:\Program Files\Mplus\PALxoriginal.dat;
  VARIABLE:        NAMES ARE m1-m3 c1-c3 pr1-pr3 f1-f4 p1-p8;
          USEVARIABLES = m1-m3 c1-c3 pr1-pr3 f1-f4 p1-p8;
          CLASSES = c (3);
  ANALYSIS:        TYPE = MIXTURE;
          STARTS = 1000 100;
  MODEL:
          %OVERALL%
  OUTPUT: sampstat standardized TECH11 TECH14;

点击RUN之后提示the input setup produced syntax warnings/errors causing Mplus to abort.....
然后output里面的错误是这样的：
*** ERROR
  The number of observations is 0.  Check your data and format statement.
  Data file:  C:\Program Files\Mplus\PALxoriginal.dat
*** ERROR
  Invalid symbol in data file:
  "m1" at record #: 1, field #: 1

是数据格式不对吗，数据文件是从EXCEL转成txt在改成dat的，小白求解。