topoplotER shows error message

[Sehatpour, Pejman]

Hi,
I am going through the tutorial for "event related averaging" and everything worked well untill I got to plotting the topographic distribution using the topoplotER. 
At this point when I enter the command which is in the tutorial, I get an error message as follows:
 
cfg = [];
cfg.xlim = [0.3 0.5];
topoplotER(cfg,avgFIC)
creating layout for ctf151 MEG system
??? Undefined command/function 'dist'.
Error in ==> work\private\createlayout at 100
    d = dist(prj');
Error in ==> topoplotER at 184
  lay = createlayout(data.grad);  
 
 
Could someone please tell me what this error is? and how it should be corrected?
The topoplotER version that I am using is from today 12/12/05
Thanks,
Pejman.