The quest is triggering, but I get stuck in the dialog box after interacting with the soul. The dialog box describes my character reaching out to touch the soul but doesn't trigger the 'soul scan' text, and the box stays on the screen.

Hello.  We are aware of this issue and have actually fixed it internally.  A patch will be available soon that addresses this issue.  If you get the cursor in the right spot however, the continue button will light up as if it's being moused over.  Click when this happens and you'll be good to go.  Thanks!