root cause
java.lang.NullPointerException info.magnolia.module.dependencies.controls.DependenciesDialogControl.getReferencesFrom(DependenciesDialogControl.java:111) info.magnolia.module.dependencies.controls.DependenciesDialogControl.drawHtml(DependenciesDialogControl.java:86) info.magnolia.cms.gui.dialog.DialogControlImpl.drawSubs(DialogControlImpl.java:321) info.magnolia.cms.gui.dialog.DialogControlImpl.drawHtml(DialogControlImpl.java:165) info.magnolia.cms.gui.dialog.DialogControlImpl.drawSubs(DialogControlImpl.java:321) info.magnolia.cms.gui.dialog.DialogControlImpl.drawHtml(DialogControlImpl.java:165) info.magnolia.module.admininterface.DialogMVCHandler.renderHtml(DialogMVCHandler.java:417) info.magnolia.cms.servlets.MVCServlet.doPost(MVCServlet.java:124) info.magnolia.cms.servlets.MVCServlet.doGet(MVCServlet.java:69) javax.servlet.http.HttpServlet.service(HttpServlet.java:617) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:119) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:84) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:84) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:84) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:84) info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:66) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.java:69) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:57) info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:65) info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:148) info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:60) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:75) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:86) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73) info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:60) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:84) info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:64) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.module.extendedtemplatingkit.filters.MultiSiteFilter.doFilter(MultiSiteFilter.java:94) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:91) info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:60) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:85) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.enterprise.registration.RegistrationFilter.doFilter(RegistrationFilter.java:51) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:84) info.magnolia.cms.filters.CosMultipartRequestFilter.doFilter(CosMultipartRequestFilter.java:86) info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:60) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:104) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:120) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82) info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:66) info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:88) info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:105) info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:216)