Can't open "Mac Help"

[EdwardKim]

Hello,

I just bought Mac book pro a week ago and am very enjoying to use Mac.
But suddenly, after install some softwares like Adium(IM), iWork08, etc., I can' t use "Mac Help" at finder's help menu.

Whenever I click "Mac Help", Mac Help window appears... and disappears in a second.

How can I fix this?

Thanks in advance.

 

[adversecamber]

Have you tried restarting?

 

[EdwardKim]

Yes, I did several times....Same symptom

Have you tried restarting?

Yes, I did several times....Same symptom