diff -r e9f7ba4718e1 -r af9b2b929b03 Source/Grid.h
--- a/Source/Grid.h	Fri Mar 07 11:43:02 2008 -0800
+++ b/Source/Grid.h	Wed Mar 12 15:51:32 2008 -0700
@@ -25,7 +25,7 @@
 
 
 /** Abstract superclass of regular geometric grids of GridCells that Bits can be placed on. */
-@interface Grid : CALayer
+@interface Grid : GGBLayer
 {
     unsigned _nRows, _nColumns;                         
     CGSize _spacing;