Finder icon blank on dock

Hello everyone,
recently I used the "Lion Design" and "Lion Tweaks" softwares, and I found them not useful for me so i deleted them. After their remove i found pretty annoying problem - the finder icon in the dock is black(picture). How can i get it back ?

Thank you ! !

Open up a Finder window and push Shift-Command-G. In the box that appears, enter the following: Before you do anything else, note the following: do not modify or move anything in this folder.

In this folder, which is the folder of "resources" (icons, etc.) for Finder, do you see a file called "Finder.icns"?

Yes it's there, and in the Dock resources "finder.png" exist too.

So at least you have the icon. With that cleared up, let's take a step back. When you say you deleted those apps, how did you delete them? Did you use the uninstaller (most customization apps have them given what they do).

I used clean my mac uninstaller

Ah! Another Clean My Mac horror story...
That's one thing you should clean out.

haha I'm not sure if you right.. Till today it served me well

Customization apps generally have uninstallers and need to be used. Download the application again, reinstall it and use the included uninstaller. If it's not included, search the developer's website for it.

The app doesn't come with any uninstaller :/
Only the app itself

Well, I see in a screenshot of "Lion Tweaks" that there is a "Reset to Lion default" button. Click that and then uninstall it. If you're talking about "Lion Designer" (I didn't find anything for "Lion Design"), it has a similar button.

Yes it's "Lion Designer", should I uninstall it using clean my mac or just the trash?

Neither. Where did you get this app?

Lion designer : Moritz Wette - Lion Designer - Customize new features of Mac OS X Lion
Lion tweaks: Fredrik Wiker Developer - Home of Lion Tweaks

note:
It's the same problem what I press cmd+tab ( The finder is there and working but blank)
Maybe the problem Related to the combo upgrade to Lion 10.7.4 ?

Solution : )
Well, after upgrading to 10.7.4 using Combo upgrade, the problem solved !

One last question: Before the upgrade, when I was using "Mission Control" I could open finder window in desktop 1, move to desktop 2 and the finder window won't "follow" me. Now it keep following me.( I can't choose where the window will be, it follows me on every desktop I am) ... I hope it is clear enough