better debugging performance if error occurs

crqa.m

@@ -147,6 +147,9 @@ function xout=crqa(varargin)
 % $Revision$
 %
 % $Log$
+% Revision 5.39  2010/01/06 08:58:59  marwan
+% adding pdist as an alternative to get the RP
+%
 % Revision 5.38  2009/05/14 16:20:32  marwan
 % automatic window length determination restored back
 % further argument checking (extreme embedding) added
@@ -1448,6 +1451,7 @@ end
 %if 0
 catch
   if nogui~=2, if ishandle(hw), close(hw), end , end
+  if nargout, xout = NaN; end
       
   z=whos;x=lasterr;y=lastwarn;in=varargin{1};
   print_error('crqa',z,x,y,in,method,action)