Index: source/blender/python/api2_2x/sceneSequence.c
===================================================================
--- source/blender/python/api2_2x/sceneSequence.c	(revision 23612)
+++ source/blender/python/api2_2x/sceneSequence.c	(working copy)
@@ -219,6 +219,7 @@
 		Sequence *seq1, *seq2 = NULL, *seq3 = NULL; /* for effects */
 
 		if (!PyArg_ParseTuple(py_data, "iO!|O!O!", &type, &Sequence_Type, &pyob1, &Sequence_Type, &pyob2, &Sequence_Type, &pyob3))
+		if (!PyArg_ParseTuple(py_data, "iO!|O!O!", &type, &Sequence_Type, &pyob1, &Sequence_Type, &pyob2, &Sequence_Type, &pyob3))
 		{
 			BLI_remlink(seqbase, seq);
 			free_sequence(seq);
@@ -232,7 +233,7 @@
 		if (pyob2) seq2 = ((BPy_Sequence *) pyob2)->seq;
 		if (pyob3) seq3 = ((BPy_Sequence *) pyob3)->seq;
 
-		if (type <= SEQ_EFFECT || type > SEQ_EFFECT_MAX || type == SEQ_PLUGIN)
+		if (type < SEQ_EFFECT  || type > SEQ_EFFECT_MAX || type == SEQ_PLUGIN)
 		{
 			BLI_remlink(seqbase, seq);
 			free_sequence(seq);