INTViewer 4.2 brings a new set of functionalities that have been made available through the API:
INTViewer 4.2 is based upon the Netbeans 6.9.1 platform. You need NetBeans 6.9.1 to develop modules (INTViewer 4.2 is not compatible with NetBeans 6.8).
A set of API incompatibilities have been introduced as part of this release.