Authoring with IFOUPDATE chapter problem

[Tano]

im having a problem with chapters in the movie Interview with a Vampire (PAL). The movie plays correctly up until the point where i use my re-encoded vobs with the original menu using Ifoupdate.

When i choose chapter 15 in the movie it jumps to chapter 15 but when i choose chapter 16 it actually jumps to chapter 17's timeframe and all the other chapters are out by one.

Here is my output from chapter extractor. Why is ifoupdate ignoring one of my chapter points?. Its really annoying because when i choose the last chapter the dvd player stops since it dosnt exist and also chapters 16-29 are out by one scene (timeframe)

$Spruce_IFrame_List

00:00:00:00
00:02:53:21
00:05:36:13
00:09:06:23
00:10:55:17
00:15:37:00
00:23:21:22
00:29:35:17
00:34:46:00
00:39:10:17
00:48:13:14
00:54:21:06
01:06:05:18
01:07:35:15
01:08:23:07
01:11:08:17 --> FOR SOME REASON THIS TIMEFRAME IS SKIPPED
01:16:28:08
01:20:30:01
01:21:04:11
01:22:20:15
01:26:27:11
01:30:21:21
01:32:26:19
01:36:26:06
01:39:20:03
01:41:39:14
01:42:42:08
01:48:11:14
01:50:04:17
01:52:00:44

[mike4692]

I had the same prob with the X-men , I re-authored with maestero and added the play lists and they all pointed to the correct time frame and it skipped a chapter , I re done it and it was still the same , when I checked the vob , the chapter was there , it just skipped over it , I then just reauthored it with the single pgc time frames and then selected cell adjust in the ifoupdate and that seemed to do the trick , also look up ifoupdate on the search option and see what you get , there was a discussion not long ago :)