All right, I cannot for the life of me, figure out why this is happening. I've started a new module with CEP 2.3 and Mirkwood tileset and everything is going great until I enter game to test it.
It seems to act like I suddenly set "Examine CR on Creatures = 0" even though it's single player AND descriptions on placeables - like a sign - doesn't show up at all! Any suggestions would be greatly welcome.
I had some problems with CEP 2.3 and Win7 until I set the executable to run in XP SP2 mode. Not sure if this is your issue, but apparently there are some scripts in 2.3 that cause NWN to run wonky in Win7.
You can diagnose if CEP is responsible by temporarily converting a copy of the mod to CEP 2.1 and see if the problem persists.
It seems, through some testing that ... adding the Mirkwood Tileset haks causes this problem, for some reason. Which is sad, but unless anyone else can explain why, it seems I'll have to go on without the tileset.