Index: trunk/ippTools/src/warptool.c
===================================================================
--- trunk/ippTools/src/warptool.c	(revision 14717)
+++ trunk/ippTools/src/warptool.c	(revision 14900)
@@ -921,8 +921,4 @@
     if (!status) {
         psError(PS_ERR_UNKNOWN, false, "failed to lookup value for -path_base");
-        return false;
-    }
-    if (!path_base) {
-        psError(PS_ERR_UNKNOWN, true, "-path_base is required");
         return false;
     }
Index: trunk/ippTools/src/warptoolConfig.c
===================================================================
--- trunk/ippTools/src/warptoolConfig.c	(revision 14717)
+++ trunk/ippTools/src/warptoolConfig.c	(revision 14900)
@@ -166,5 +166,5 @@
             "define URI of file", 0);
     psMetadataAddStr(addwarpedArgs, PS_LIST_TAIL, "-path_base", 0,
-            "define base output location (required)", 0);
+            "define base output location", 0);
     psMetadataAddF64(addwarpedArgs, PS_LIST_TAIL, "-bg",  0,
             "define exposure background", NAN);