I'm having the same issue. Installs everything find but hangs at finishing installation. It's almost like there's a pop up somewhere hidden, because you can't click anywhere without the error ding. I haven't been able to install mods for a while now. I took a break from WoWS so it didn't matter much at first, now that i'm getting back into the game, it's a real issue.
And I believe I have the texture based ambient occlusion option selected. I'll check again once I've closed out this current install.