XSL Tools/API Tooling
For developing the XSL Tools plugins, all XSL Tools committers and contributors should have a Base Line eclipse installation installed. XSL Tools plugins have PDE's API Tooling enabled to help catch API breakages and versioning errors.
=Setup API Tooling
For information on setting up API tooling see the following article:
Eclipse 3.4 JEE package should be the base line along with XSL Tools 0.5 added to that package.
Make sure to set up your Base Line reference in the Prefences->Plugin-Development->API Base Line
The name should be WTP 3.0.