java.lang.NullPointerException
   at org.netbeans.modules.debugger.jpda.js.source.SourceFilesCache.getSourceFile(SourceFilesCache.java:79)
   at org.netbeans.modules.debugger.jpda.js.source.Source.<init>(Source.java:94)
   at org.netbeans.modules.debugger.jpda.js.source.Source.getSource(Source.java:193)
   at org.netbeans.modules.debugger.jpda.js.breakpoints.JSJavaBreakpointsManager$ScriptsHandler.breakpointReached(JSJavaBreakpointsManager.java:258)
   at org.netbeans.api.debugger.jpda.JPDABreakpoint.fireJPDABreakpointChange(JPDABreakpoint.java:300)
   at org.netbeans.api.debugger.jpda.JPDADebugger.fireBreakpointEvent(JPDADebugger.java:491)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.fireBreakpointEvent(JPDADebuggerImpl.java:658)
   at org.netbeans.modules.debugger.jpda.breakpoints.BreakpointImpl.perform(BreakpointImpl.java:559)
   at org.netbeans.modules.debugger.jpda.breakpoints.MethodBreakpointImpl.exec(MethodBreakpointImpl.java:258)
   at org.netbeans.modules.debugger.jpda.util.Operator.processEvents(Operator.java:502)
   at org.netbeans.modules.debugger.jpda.util.Operator.access$800(Operator.java:116)
   at org.netbeans.modules.debugger.jpda.util.Operator$1.run(Operator.java:247)
   at java.lang.Thread.run(Thread.java:745)