If your ZIP archive are broken under WAMP
Here is the solution found by greywolfsspirit :
Apparently, there is a bug in the php_zip.dll in php 5.2.8.. Just for the hell of it, I installed php 5.2.11 and guess what.. it works.. go figure..
So, apparently, php 5.2.8 has some broken dll files (found info that some xml routines were screwed up when using rss feeds with it as well).
So, if anyone else experiences these issues, running under WAMPserver 2, they need to go to the wampserver website, and download the php 5.2.11 addon package.