Failed opening required 'PHP/CodeCoverage/Autoload.php' 

I have checked the CodeCoverage folder and it doesn't have any Autoload.php file.

Let me know if I could manually find the files under "CodeCoverage" folder somewhere so that I could copy them.

Note: When the command "cake Phpunit.Phpunit install" is extracting, when it comes to PHP CodeCoverage it throws tar.exe stopped working and then continues to extracting rest of the stuff.
