Index: trunk/psModules/src/psmodules.h
===================================================================
--- trunk/psModules/src/psmodules.h	(revision 29388)
+++ trunk/psModules/src/psmodules.h	(revision 30623)
@@ -98,4 +98,5 @@
 // the following headers are from psModule:imcombine
 #include <pmStack.h>
+#include <pmSubtractionTypes.h>
 #include <pmStackReject.h>
 #include <pmSubtraction.h>