The only thing that comes to mind is that there is a prerequisite setup that the Unreal Engine needs.
Go to this location: WickedIsland\Windows\Engine\Extras\Redist\en-us and there should be a file called UEPrereqSetup_x64, run that file and try launching the game again.
The WickedIsland.exe and the exe you found in that win64 folder should both launch the game, unless you are having some specific problem, you should not need to use that file in the win64 folder.
I am guessing that you are talking about the bottles of semen you can collect from monsters when you defeat them. To find those vials, you need to have empty bottles in your character's inventory and then defeat monsters in combat.
If you have a research table, you can use 10 of any one type of semen to craft a summon/follower. Instead of needing to get your character pregnant and have a baby, you can use the semen to make a follower.
As far as I know, there really isn't much you can do with the female slaves you can free.
You are not alone in that issue. I encountered the exact same thing when I tried entering the tower. If there is a trigger for it, I don't think it was listed in the patch notes. I think something 'bugged out' and made the tower inaccessible.
thx for the info it worked , you learn something new everyday thanks again