Index: trunk/psModules/src/camera/pmFPAfileIO.c
===================================================================
--- trunk/psModules/src/camera/pmFPAfileIO.c	(revision 19307)
+++ trunk/psModules/src/camera/pmFPAfileIO.c	(revision 20254)
@@ -727,4 +727,8 @@
     bool create = file->mode == PM_FPA_MODE_WRITE ? true : false;
     psString tmpName = pmConfigConvertFilename (file->filename, config, create, false);
+    if (!tmpName) {
+	psError(PS_ERR_IO, false, "failed to determine real name from template for %s\n", file->filename);
+	return false;
+    }
     psFree (file->filename);
     file->filename = tmpName;