I don't understand error messages

[Victor Eijkhout]

  * There was an Execution Error at 12:15:11 PM
Error description:  Function: error in function handler
Object: field id 1357 of card id 1002 of stack "/TiBook hard 
drive/Users/victorle/Documents/Revolution programming/ATC.rev"
--------------------
--answer "create" && nam,i,j,alt,idir,jdir
--------------------
Value: is_exit


This seems to claim that there is an error in a commented line?!
-- 
Victor Eijkhout <eijkhout at cs.utk.edu>
tel: 865 974 9308 (W), 865 673 6998 (H), 865 974 8296 (F)
http://www.cs.utk.edu/~eijkhout/