Index: generic/nsf.c
===================================================================
diff -u -r9f90d6b1ce7bfabedbda9470cb71fa368a64531c -r1a7f8ba5a64328222a30016f19769f6595a74ace
--- generic/nsf.c	(.../nsf.c)	(revision 9f90d6b1ce7bfabedbda9470cb71fa368a64531c)
+++ generic/nsf.c	(.../nsf.c)	(revision 1a7f8ba5a64328222a30016f19769f6595a74ace)
@@ -28119,19 +28119,24 @@
   normalArgs = i-1;
 
   /*
-   * Get the init string; do it once, outside the loop.
+   * Get the init string; do it once, outside the loop.  If initString is not
+   * obtainable (i.e. not configured in the object system), don't call the
+   * "init" method in the loop.
    */
   if (i < objc) {
     NsfObjectSystem *osPtr = GetObjectSystem(object);
     Tcl_Obj *initObj = osPtr->methods[NSF_o_init_idx];
+
     if (initObj != NULL) {
       initString = ObjStr(initObj);
+      assert(initString != NULL);
     }
+
   }
 
+
   for( ; i < objc;  argc = nextArgc, argv = nextArgv, methodName = nextMethodName) {
 
-    assert(initString != NULL);
     Tcl_ResetResult(interp);
 
     switch (isdasharg) {
@@ -28147,9 +28152,11 @@
             break;
           }
         }
-        result = CallConfigureMethod(interp, object, initString, methodName, argc+1, objv+i+1);
-        if (unlikely(result != TCL_OK)) {
-          return result;
+        if (initString != NULL) {
+          result = CallConfigureMethod(interp, object, initString, methodName, argc+1, objv+i+1);
+          if (unlikely(result != TCL_OK)) {
+            return result;
+          }
         }
         i += argc;
         break;
@@ -28165,9 +28172,11 @@
           nextArgv = NULL;
           nextArgc = 0;
         }
-        result = CallConfigureMethod(interp, object, initString, methodName, argc+1, argv+1);
-        if (unlikely(result != TCL_OK)) {
-          return result;
+        if (initString != NULL) {
+          result = CallConfigureMethod(interp, object, initString, methodName, argc+1, argv+1);
+          if (unlikely(result != TCL_OK)) {
+            return result;
+          }
         }
         break;
       }