Issues Server Version
The property issueServerVersion supports to fine tune the communication with the issues server. This page gives some guidelines on how to use it.
You may always add the version identifier for you issues server.
Bugzilla 4.4
Starting with version 4.4 of Bugzilla, the creation of a new product requires to also add one component.
If you are using Bugzilla with version 4.4 (and above), use:
<issueServerVersion>4.4</issueServerVersion>