Index: trunk/psModules/src/camera/pmHDUGenerate.c
===================================================================
--- trunk/psModules/src/camera/pmHDUGenerate.c	(revision 15477)
+++ trunk/psModules/src/camera/pmHDUGenerate.c	(revision 16210)
@@ -391,4 +391,5 @@
         // Nothing from which to create an HDU
         psFree(cells);
+        psError(PS_ERR_IO, true, "Nothing from which to create an HDU\n");
         return false;
     }