Re: No dialogue options in conversation with morrigan

That's really strange.  Haven't heard of that problem before.  (Any mods installed?)

a)  Exit and then re-launch the game from your most recent save.  Did that fix the issue?

b)  Un-/re-install the game (I know, a real pain.  But something is seriously wrong and you can't play as it is, so drastic measures are justified.

c)  If you do have to re-install, (and internet usage isn't an issue) I recommend going with the EA/Orgin digital download version.  It's about 24GB (for the UE) but the advantages are 1)  Never need the physical discs again, and 2) Game info (including product/CD-keys) are stored on the Origin servers and you can retrieve any time.