Error when trying to play Dead Island Riptide

I am getting an “engine_x86_rwdi.dll” error although I already have the dll file.
Answer #1
found in steam forums..
one user said steam tool fixes the prob..
http://forums.steampowered.com/forums/showthread.php?t=2167210
see if it helps..
Answer #2
Apparently the SteamTool doesn’t work with Windows XP. I will try to install the game on my home PC that has Windows 7.
Answer #3
Yeah I’m having issues as well with the game crashing I’m guessing we’ll see an update in the next few days.
Answer #4
Maybe the 3DM crack will work?
Answer #5
Try temporarily disabling your security software or doing a clean reinstall