Index: trunk/ppStack/src/ppStack.c
===================================================================
--- trunk/ppStack/src/ppStack.c	(revision 20098)
+++ trunk/ppStack/src/ppStack.c	(revision 20410)
@@ -38,4 +38,10 @@
     }
 
+    if (!psphotInit()) {
+        psErrorStackPrint(stderr, "Error initialising psphot.\n");
+        exitValue = PS_EXIT_PROG_ERROR;
+        goto die;
+    }
+
     if (!ppStackCamera(config)) {
         psErrorStackPrint(stderr, "Error setting up input files.\n");