I recently added a few mods from the Steam site, and was enjoying them.
Then a couple of things went wrong.
1st while trying to go thru the Nightingale ceremony, Karliah walks away
leaving the cave, saying "we'll talk again when the ceremony is done.

2nd.....the game keeps kicking me out a very random points all the
way back to my desk top.
Any thoughts or help would be most welcome.

Thanks

This is something that may happen infrequently or frequently. It seems to be based on luck. Just save often. That's the easiest way to fix this. It won't get rid of the problem, but it will mean you can pick right back up to where you were.

http://www.imperial-library.info/sites/default/files/dogate_til_fishystick.jpg