Problem:
I was installing Adobe Photoshop CS4 on my Windows 7 and lately, I encountered an error after installation. The message listed below:
1. missing component
2. try to restart the pc and reinstall the product
3. please disable all the firewall and anti-virus
3. please close all the application before and during installation

when I click the more information, the message is this:
"Adobe Photoshop CS4 English Language Pack
Error:
Error 2."
I reinstalled my Adobe PS CS4 many times but its also the same error I've always been encountered.
But luckily, I found a solution to this Language Pack Error.


Solution:
Reinstall the product. When you are about in the OPTION portion of the installation, you will see the Installation Language Pack. As you will see, the default value is English(US). Change it into English(International) and your are now done with the problem. Its just that simple. You can see the picture below.