Index: trunk/ppStack/src/ppStackSources.c
===================================================================
--- trunk/ppStack/src/ppStackSources.c	(revision 18490)
+++ trunk/ppStack/src/ppStackSources.c	(revision 18918)
@@ -330,8 +330,10 @@
 
     // Read recipe values
-    float radius = psMetadataLookupF32(NULL, config->arguments, "SOURCE.RADIUS"); // Exclusion radius
-    int minOverlap = psMetadataLookupS32(NULL, config->arguments, "SOURCE.MIN"); // Minimum number
-    int iter = psMetadataLookupS32(NULL, config->arguments, "SOURCE.ITER"); // Clipping iterations
-    float rej = psMetadataLookupF32(NULL, config->arguments, "SOURCE.REJ"); // Clipping rejection
+    psMetadata *recipe = psMetadataLookupMetadata(NULL, config->recipes, PPSTACK_RECIPE); // ppStack recipe
+    psAssert(recipe, "We've thrown an error on this before.");
+    float radius = psMetadataLookupF32(NULL, recipe, "SOURCE.RADIUS"); // Exclusion radius
+    int minOverlap = psMetadataLookupS32(NULL, recipe, "SOURCE.MIN"); // Minimum number
+    int iter = psMetadataLookupS32(NULL, recipe, "SOURCE.ITER"); // Clipping iterations
+    float rej = psMetadataLookupF32(NULL, recipe, "SOURCE.REJ"); // Clipping rejection
 
     // Look for overlaps with existing lists
@@ -370,5 +372,7 @@
     PS_ASSERT_PTR_NON_NULL(config, NULL);
 
-    float radius = psMetadataLookupF32(NULL, config->arguments, "SOURCE.RADIUS"); // Exclusion radius
+    psMetadata *recipe = psMetadataLookupMetadata(NULL, config->recipes, PPSTACK_RECIPE); // ppStack recipe
+    psAssert(recipe, "We've thrown an error on this before.");
+    float radius = psMetadataLookupF32(NULL, recipe, "SOURCE.RADIUS"); // Exclusion radius
 
     int numLists = 0;                   // Number of lists