Content of tar.gz archive is different than zip?

Hello, I downloaded Yii 1.1.8.r3324 as a zip archive provided on your Downloads page. When I installed Yii under Windows/Apache/PHP and tried to create my first app with yiic tool, it didn’t write any error messages, just closed silently. I tried to do the same under Ubuntu/Apache/PHP, and it gave me some PHP warnings and errors.

Then I downloaded Yii as tar.gz archive, and tried to do the same - and it worked! What’s the problem with ZIP archive? Is it correct?

Compare PHP versions on both installations. Use zip archive under linux to make sure archives are the same.