Try dragging the /Home/Library/Preferences/com.apple.finder.plist file to the Trash (don't Empty.) Also, drag the /Home/Library/Caches/com.apple.finder/ folder to the Trash.
If you don't see the /Home/Library/ folder then see the following:
Three Ways to Make the Home/Library Folder Visible
A. This method will make the folder visible permanently. Open the Terminal application in the Utilities folder and paste the following at the command prompt:
chflags nohidden ~/Library
Press RETURN.
B. Click on the Desktop, press the Option (⌥) key, select Library from the Finder's Go menu.
C. Select Go To Folder from the Finder's Go menu. Paste the following in the path field:
~/Library
Click on the Go button.