meta-inf folder not getting created

I am not able to load the epub in iPad. When I unzipped the epub file using winrar, it is showing this error:

Cannot create META-INF\container.xml
The system cannot find the path specified.

After the unzip operation the folder only contains a 0 byte META-INF file.

I isolated the following code and tested it using PHPZip class but still the same error:

$zip->addDirectory("META-INF//");

$content = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<container version=\"1.0\" xmlns=\"urn:oasis:names:tc:opendocument:xmlns:container\">\n\t<rootfiles>\n\t\t<rootfile full-path=\"book.opf\" media-type=\"application/oebps-package+xml\" />\n\t</rootfiles>\n</container>\n";

$zip->addFile($content, "META-INF/container.xml");

Thanks Asbjorn Grandt for this wonderful class. After fixing the issue, it worked like a charm :)

I fixed the issue by commeting the following lines in ePub.php.

//$this->zip->addDirectory("META-INF//");

It seems there is no need to add the "META-INF" directory seperately. The addFile() with META-INF in path does the job: