I'm experiencing a variation on this, that I've not seen mentioned.
After killing Ravel, I went to the northeast portal. Clicking on the portal itself caused me to be teleported to another corner, but walking around the vicinity of the portal causes the dialog to trigger. Here's where it gets weird: After choosing the option to cross my arms and jump through, a cutscene involving Ravel and The Transcendent One is shown. He tells her to get up, and she does, but she just stands there, and there is no further dialog between them. Then the dialog box asking if I want to jump in the portal comes up AGAIN, and if I choose to jump in, the same cutscene plays again, but generates another set of Ravel and The Transcendent One, who stand next to their doppelgangers. I've repeated this up to three times, getting 3 of each of them. The only way to stop it is to choose the option of not jumping in the portal, but that leads to another bug:
I regain control of my party, and they are standing in the same "room"(black space in the bottom-left corner of the map) as Ravel and The Transcendent One. I can click on either of them to initiate dialog, but only The Transcendent One will say anything--something to the effect of "So you have come. You are not welcome here, broken one"), but that's all. Anyone else have an experience like this? I'm only using the essential bug fixes.
Well, after some more searching, I decided that the best thing to do would be to try disabling the "subtitles in cutscenes" mod(the only mod I had installed, which seemed harmless enough), as baal-zebub suggested above. Strangely, this actually fixed the whole game-breaker of a problem, and the whole scene completed without error, allowing my party to transition to the next map. Hopefully, this info will help somebody else with a similar issue.
Post edited July 22, 2012 by Leb86