Yes that cutscene was the end of the D2:ED section of the game, which should then move right into FoV. I'm not sure why you would have a problem at that loading screen with an existing character but not when starting a new one.
I don't know if anyone has had any problems with their inventory during that transition, but you could try selling or destroying any unnecessary loot in your character's backpack or battle tower chest (at least in D2:ED you could return to the battle tower from the dragon sections of the Hall of Echoes). Other games have had problems transferring large inventories between acts, etc; I have not seen this reported for DKS (it is one difference between an existing character and new one, though), so don't overwrite any of your current end-game saves if you try this.
You could try lowering the game resolution and all the graphics options, and see if that makes a difference with the loading screen before FoV.
Do you have access to another computer you could try the game on?
I'm not sure what else to suggest, other than emailing Larian (perhaps including a save before finishing off the last opponent in Ygerna's memory).
In English versions of Windows, in XP the saves are in the folder
C:\Documents and Settings\ %username% \Local Settings\Application Data\Divinity 2\Savegames
or in Vista / Win 7
C:\Users\ %username% \AppData\Local\Divinity 2\Savegames
You may need to set Windows Explorer to show hidden files and folders (
XP, Vista,
Win 7).
