Many plugins have incorrectly set the build.properties file what can cause issues in a build.

For instance,

• the org.jboss.tools.jst.web plugin
  catalog, resources & Preferences.xml aren't included in the build.properties.
  The http://java.sun.com/xml/ns/javaee/ catalog entry is marked with an error in the XML Catalog preference page; JBossTools always downloads web_facesconfig_1_2.xsd from the Internet; OpenOn doesn't work for a JSF configuration file (see JBIDE-1771), etc.
  These issues occur only in a build, they don't occur in PDE Runtime.

• the org.hibernate.eclipse.
  The branding files aren't included in the build.properties file. The hibernate feature is partially branded.

The following is a list of plugins that have entries that aren't included in the build.properties (it is possible that some of the entries aren't required):

org.hibernate.eclipse
about.html
about.ini
about.mappings
about.properties
hibernate_log4j.properties
hibernate_icon.gif
welcome.xml

org.hibernate.eclipse.console
schema

org.jboss.ide.archives.core
schema

org.jboss.ide.eclipse.as.ui
schema

org.jboss.ide.eclipse.as.ui.mbeans
schema

org.jboss.ide.eclipse.firstrun
schema

org.jboss.ide.eclipse.jdt.j2ee.xml.ui
icons

org.jboss.ide.eclipse.jdt.ui
icons

org.jboss.ide.eclipse.ui
resources and icons

org.jboss.tools.common.model
resources and lib

org.jboss.tools.common.model.ui
resources, schema, templates

org.jboss.tools.common.verification
resources

org.jboss.tools.esb.core
resources

org.jboss.tools.hibernate.xml
resources

org.jboss.tools.jsf
Preferences.xml, meta, resources

org.jboss.tools.jsf.doc.user
all except META-INF

org.jboss.tools.common.gef
resources

org.jboss.tools.common.kb
resources

org.jboss.tools.common.meta.ui
resources

org.jboss.tools.jsf.ui
resources

org.jboss.tools.jsf.verification
resources

org.jboss.tools.jst.jsp
resources

org.jboss.tools.jst.web
catalog, resources and Preferences.xml

org.jboss.tools.jst.web.tiles
resources

org.jboss.tools.jst.web.tiles.ui
resources

org.jboss.tools.jst.web.verification
resources

org.jboss.tools.seam.doc.user
all except META-INF

org.jboss.tools.seam.xml
resources

org.jboss.tools.struts
Preferences.xml, meta, resources

org.jboss.tools.struts.debug
resources

org.jboss.tools.struts.ui
resources

org.jboss.tools.struts.verification
resources

org.jboss.tools.struts.vpe.struts
plugin.properties