Index: trunk/ppImage/src/ppImageAddstar.c
===================================================================
--- trunk/ppImage/src/ppImageAddstar.c	(revision 10144)
+++ trunk/ppImage/src/ppImageAddstar.c	(revision 10448)
@@ -103,5 +103,6 @@
 
     bool status;
-    char *addstarLine = psStringSubstitute (addstarCommand, filename, "%s");
+    char *addstarLine = psStringCopy(addstarCommand);
+    psStringSubstitute(&addstarCommand, filename, "%s");
 
     // catch addstar stderr/stdout and do what?