--- a/pyink/frameline.py	Mon Dec 27 23:20:13 2010 +0800
+++ b/pyink/frameline.py	Tue Dec 28 22:26:11 2010 +0800
@@ -370,6 +370,12 @@
 		self._draw_tween(first_tween_key.idx, last_tween_key.idx,
 				 first_tween_key.right_tween_type)
 		last_tween_key = self._keys[last_tween_pos]
+		key_pos = last_tween_pos + 1
+		try:
+		    key = self._keys[key_pos]
+		except:
+		    key = keyframe(self._num_frames)
+		    pass
                 i = last_tween_key.idx + 1
 	    else:
                 self._draw_normal_frame(i)
@@ -704,7 +710,8 @@
 		block = (key.idx, next_key.idx, key.right_tween_type)
 	    elif not key.left_tween:
 		block = (key.idx, key.idx, 0)
-		pass
+	    else:
+		continue
 	    blocks.append(block)
 	    pass
 	return blocks
@@ -713,11 +720,14 @@
 	pos = self._find_keyframe_floor(idx)
 	if pos != -1:
 	    key = self._keys[pos]
+	    print key.right_tween, key.left_tween
 	    if key.idx == idx:
 		return key.idx, key.idx, 0
 	    elif key.right_tween:
 		next_key = self._keys[pos + 1]
 		return key.idx, next_key.idx, key.right_tween_type
+	    else:
+		return -1,-1,-1
 	    pass
 	raise ValueError, \
 	    'the frame specified by idx is not in any tween or a key frame'