Nao consigo colocar o breakpoint no netbeans

java.lang.NullPointerException

at org.netbeans.modules.tomcat5.jsps.FindJSPServletImpl.getTagHandlerClassName(FindJSPServletImpl.java:123)

at org.netbeans.modules.tomcat5.jsps.FindJSPServletImpl.getServletResourcePath(FindJSPServletImpl.java:68)

at org.netbeans.modules.j2ee.deployment.devmodules.api.JSPServletFinder.getServletResourcePath(JSPServletFinder.java:124)

at org.netbeans.modules.web.debug.util.Utils.getServletClass(Utils.java:133)

at org.netbeans.modules.web.debug.util.Utils.getClassFilter(Utils.java:145)

at org.netbeans.modules.web.debug.breakpoints.JspLineBreakpoint.(JspLineBreakpoint.java:72)

at org.netbeans.modules.web.debug.breakpoints.JspLineBreakpoint.create(JspLineBreakpoint.java:101)

at org.netbeans.modules.web.debug.actions.JspToggleBreakpointActionProvider.doAction(JspToggleBreakpointActionProvider.java:100)

at org.netbeans.spi.debugger.ActionsProvider$1.run(ActionsProvider.java:77)

at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:493)

[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:926)