Index: trunk/ppImage/src/ppImageDetrendFringe.c
===================================================================
--- trunk/ppImage/src/ppImageDetrendFringe.c	(revision 10408)
+++ trunk/ppImage/src/ppImageDetrendFringe.c	(revision 11191)
@@ -147,4 +147,8 @@
 
     pmFringeScale *solution = psMetadataLookupPtr(NULL, science->parent->analysis, "FRINGE.SOLUTION");
+    if (!solution) {
+        psError(PS_ERR_UNEXPECTED_NULL, false, "Unable to find fringe solution.\n");
+        return false;
+    }
     assert(fringes->readouts->n == solution->nFringeFrames);