Error - 'Solution File is Invalid' while importing Solution in MSCRM 2011

Today I was trying to import Contact Entity solution after done some changes in customization.xml and i found below error :

"Error while Importing a solution in CRM 2011 – The solution file is invalid. The compressed file must contain the following files at its root: solution.xml, customizations.xml, and [Content_Types].xml"

After spending a huge amount of time checking and rechecking my code, I was finally sure that the issue had to be somewhere else.

Problem Was - I was zipping up the solution folder, this then creates a zip file with a folder at the root and then the three solution files

Hosk Solution

[Content Types].xml

solution.xml

customizations.xml

What i was doing : 

Solution Is - What you have to do is select the three xml files and then zip them up.  This then doesn’t create the root folder. :)

What had to do : 

Cheerssssss :) :)