[Limdep Nlogit List] sample command file and data file with variable number of choices

[Xie, Xiaoqing Kristine]

Hi,
 
I am using NLOGIT 4.0 to do a discrete choice model project.  It is actually a multinomial logit model.  The data that I am working on is with variable number choices (instead of fixed nunmber of choices).  To be more specific, I need to define a "universal choice set".  
 
Anyway, I did the coding, but it did not run through.  So I am looking for a sample code (command file) with corresponding data file with variable number of choices.  If you have them, please email them to me.
 
Or if you understand what the following error message means, please explain to me as well.  Especially what the very left column means?( 0 35 72 ....etc)
 
 Inspecting the data set before estimation.               |
| These errors mark observations which will be skipped.    |
| Row Individual = 1st row then group number of data block |
+----------------------------------------------------------+
    0      1  Universal choice set. LHS variable is < 0 or > no. of alts.
   35      2  Universal choice set. LHS variable is < 0 or > no. of alts.
   72      3  Universal choice set. LHS variable is < 0 or > no. of alts.
  103      4  Universal choice set. LHS variable is < 0 or > no. of alts.
  137      5  Universal choice set. LHS variable is < 0 or > no. of alts.
  174      6  Universal choice set. LHS variable is < 0 or > no. of alts.
  Error  1022: Insufficient valid observations to fit a model

 
Thanks,
 
Kristine