The expected version of the product was not found on the system

Today I have tried to install SP 1 for Arabic Language pack in environment which installed with SharePoint 2010 with SP 1 in one setup file (SlipStreamed)  so when I run the setup I got the following error:

“The expected version of the product was not found on the system”

Fix:

So to fix this problem I have tried what is mentioned in the below article which suggested to run the setup from command prompt as following:

C:\serverlanguagepack2010sp1-kb2460056-x64-fullfile-ar-sa.exe  PACKAGE.BYPASS.DETECTION.CHECK=1

Ref: [ please Mr. ikarstein add Arabic language to your list :) ]

https://blog.karstein-consulting.com/2012/06/20/how-to-install-sharepoint-server-2010-language-pack-sp1/