Index: trunk/psModules/src/detrend/pmBias.c
===================================================================
--- trunk/psModules/src/detrend/pmBias.c	(revision 15162)
+++ trunk/psModules/src/detrend/pmBias.c	(revision 16841)
@@ -113,4 +113,5 @@
     }
     if (dark) {
+        psWarning("Dark processing is now available using pmDark --- perhaps you should use that instead?");
         PS_ASSERT_PTR_NON_NULL(view, false);
         PS_ASSERT_IMAGE_NON_NULL(dark->image, false);
@@ -121,5 +122,5 @@
 
     if (!pmOverscanSubtract (in, overscanOpts)) {
-	return false;
+        return false;
     }
 
@@ -148,16 +149,16 @@
         }
 
-	float darkNorm = 1.0;
+        float darkNorm = 1.0;
         float inNorm = pmFPADarkNorm(in->parent->parent->parent, view, inTime);
 
-	// if we have a normalized dark exposure, we simply multiply the master by inNorm.  if
-	// we do not have a normalized exposure, we have to scale the master as well.  XXX do
-	// we need to explicitly identify the master as normalized?
+        // if we have a normalized dark exposure, we simply multiply the master by inNorm.  if
+        // we do not have a normalized exposure, we have to scale the master as well.  XXX do
+        // we need to explicitly identify the master as normalized?
 
-	if (darkTime != 1.0) {
-	    darkNorm = pmFPADarkNorm(dark->parent->parent->parent, view, darkTime);
-	}
+        if (darkTime != 1.0) {
+            darkNorm = pmFPADarkNorm(dark->parent->parent->parent, view, darkTime);
+        }
 
-	if (isnan(inNorm) || isnan(darkNorm)) {
+        if (isnan(inNorm) || isnan(darkNorm)) {
             psError(PS_ERR_UNKNOWN, false, "Unable to determine dark normalisations.");
             return false;