the warnings you get can be ignored. That's my mistake ;)
I am suspecting that there is something wrong with zip on your system. The OASIS extension uses the zip command line to create the .odt document. The zip and unzip command line program needs to be installed and available for the apache user. You can also specify the path in oo.ini if needed.
There are currently some error checking missing, checking for zip is one of them.
After testing I think the problem lies with the delivery. by removing
//eZDir::recursiveDelete( $this->OOExportDir );
//eZDir::recursiveDelete( $this->OOTemplateDir); I can see that all the xml info is being created.
The problem is with the zip/chdir command in the file...
chdir( $this->OOExportDir ); just plain fails on a chroot environment (and appears to be the only time it has been used in eZP). So I hard coded for now. Even with the hardcoded info the zip file is not being created.
I will keep digging, but would really prefer if you could use the zlib code rather than the exec zip command.
Tony Wood : twitter.com/tonywood
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Experts in eZ Publish consulting & development