Index: trunk/psModules/src/camera/pmHDUGenerate.c
===================================================================
--- trunk/psModules/src/camera/pmHDUGenerate.c	(revision 18210)
+++ trunk/psModules/src/camera/pmHDUGenerate.c	(revision 18227)
@@ -212,5 +212,5 @@
 
         const char *biassecSource = psMetadataLookupStr(&mdok, cell->config, "CELL.BIASSEC.SOURCE");
-        if (strcmp(biassecSource, "VALUE") == 0) {
+        if (biassecSource && strcmp(biassecSource, "VALUE") == 0) {
             const char *biassecStr = psMetadataLookupStr(&mdok, cell->config, "CELL.BIASSEC");
             psFree(biassecItem->data.V);