JOKER84  Are you running the latest version? I see no problem in the app and no reason for there to be a problem in the code...and you're running Leopard, right?  
(Version 1.7)

CEREZO  Yea i am running the latest version 10.5.3. Leopard.

The domain/default pair of (com.apple.finder,AppleShowAllFiles) does not exist.--->this occured

I really give up finding the hidden files..so please give me a solution. i did reinstall the software..and it wont go away.  
(Version 1.7)

JOKER84  No, the latest version of the application. That error message is exactly like the one from version 1.6, which we fixed. I'll check it out though.  
(Version 1.7)

CEREZO  Okay i'll wait till u have the solution for me, cause i had tried everything and i have lost some important files just to try out the software.

Thanks in advance.  
(Version 1.7)

JOKER84  OK, to do it manually, just type this into the terminal:

defaults write com.apple.finder AppleShowAllFiles TRUE

killall Finder

This will reveal all hidden files in your system, including the ones that were hidden and you can't recover. To re-hide the files, type this in:

defaults write com.apple.finder AppleShowAllFiles FALSE

killall Finder

This application just does that automatically, plus adds handy things like the create, open, and delete features.  
(Version 1.7)

MIEL.G  I downloaded version 1.7 last night and had the same error message popped-up. But when I tried again this morning with the version I downloaded last night, it looks like it works when a window shows up asking me what to do. Problem is I can have 3 options:

Files

Folders

Hide All Hidden Items

but I can't see the option to Show All Hidden Item? I'm desperately in need of finding the corrupted file ".superintelligence" :(  
(Version 1.7)

JOKER84  Are you already in Show All items mode on your computer? Houdini shows a different option based on the current state of the computer. So if it's working properly, that's supposed to mean your computer is already in Show All mode. Try using the Hide All option and then relaunching the program. I'll also have a look and see if I can find the problem.  
(Version 1.7)