ros integration and configure array properties

Dear all,

When i inserted a ros port (mainly following the guide for integration)
in a previously working orocos app,
i got the following errors in reading properties from xml file

1.045 [ ERROR ][PropertyLoader:configure] The type 'array' did not
provide a type composition function, but I need one to compose it from a
1.045 [ ERROR ][DeploymentComponent::configureComponents] Failed to
configure properties for component MRobot

All the components that have a property like

RTT::Property<std::vector<double> > P_initialPositions;

gives similar behaviour.
how can i solve this?
I am using the diamondback from Debian packages.

Thanks & regards, Gianni.