ValueStreamRegistry is a Singleton outside the IoC container
In source:/Packages/phpCRJackrabbit/Classes/T3P_phpCRJackrabbit_ValueStream.php#138 there are some static calls to ValueStreamRegistry::getInstance(). These calls probably should go to some class like T3P_PHPCRJackrabbit_ValueStreamRegistry.
Furthermore, it's not such a good solution to implement the Singleton registry (I suppose it is one) on your own, better use the Component Manager for that.
Solution: Create a constructor which injects the ValueStreamRegistry and configure that registry as scope=singleton in the Components.conf.