TV episode stacking

[psych0phobia]

I'm having a lot of trouble getting multi-part episode stacking to work with the Babylon Beta 1. This is my first time using XBMC, so it's probably just a setup issue (I hope), but I've been struggling for a while with no results.

According to the wiki, if the Stack Duplicate TV Shows option is enabled and multiple files in the same folder have the same season and episode numbers, they should "stack" and be displayed as one entry in the library. So, here's what I have:

My files have a rather unique, descriptive naming convention --
Battlestar Galactica (2003)\s01e01p0 [2004-10-18] ''33 - Intro''.xvid.ac3.avi
Battlestar Galactica (2003)\s01e01p1 [2004-10-18] ''33''.xvid.ac3.avi
Battlestar Galactica (2003)\s01e01p2 [2004-10-18] ''33 - Credits''.xvid.ac3.avi
p1 is always the main content and the others parts could be extra dvd content, "previously on" segments, etc.

XBMC is recognizing the files with no problem but is not stacking them. I end up with two entries in the episode list that appear to be exactly identical except for the file path.

I have tried adding this to the advancedsettings.xml, but there is no difference in behavior:
<advancedsettings>
<moviestacking>
<regexp>[Ss][0-9]+[Ee][0-9]+[Pp]([0-9]+)</regexp>
</moviestacking>
</advancedsettings>

Is there any hope of getting this to work?

[vdrfan]

Nope, stacking is disabled by default for tvshows and there's no way to enable it without code modifications.