Index: trunk/ppStack/src/ppStackPSF.c
===================================================================
--- trunk/ppStack/src/ppStackPSF.c	(revision 23192)
+++ trunk/ppStack/src/ppStackPSF.c	(revision 25413)
@@ -8,4 +8,6 @@
 
 #include "ppStack.h"
+
+//#define TESTING
 
 pmPSF *ppStackPSF(const pmConfig *config, int numCols, int numRows,
@@ -28,4 +30,12 @@
     }
 
+#ifdef TESTING
+    // Dummy PSF
+    pmPSF *psf = pmPSFBuildSimple("PS_MODEL_GAUSS", 7.0, 7.0, 0.0);
+    if (!psf) {
+        psError(PS_ERR_UNKNOWN, false, "Unable to build dummy PSF.");
+        return NULL;
+    }
+#else
     // Solve for the target PSF
     pmPSF *psf = pmPSFEnvelope(numCols, numRows, psfs, psfInstances, psfRadius, psfModel,
@@ -35,4 +45,5 @@
         return NULL;
     }
+#endif
 
     return psf;