java.lang.IllegalArgumentException: TreePathHandle [C:\Users\holger\Development\EURECA\XMedlan_1.0.1\src\xmedlan\RelationExtractor.java] was not created from C:\Users\holger\Development\EURECA\XMedlan_1.0.1\src\xmedlan\RelationExtractor.java
mine: id=C:\Users\holger\Development\EURECA\XMedlan_1.0.1\src\xmedlan\RelationExtractor.java@d7fbe76c:585e39e5, url=file:/C:/Users/holger/Development/EURECA/XMedlan_1.0.1/src/xmedlan/RelationExtractor.java
remote: id=C:\Users\holger\Development\EURECA\XMedlan_1.0.1\src\xmedlan\RelationExtractor.java@d7fbe76c:5732f93a[invalid], url=file:/C:/Users/holger/Development/EURECA/XMedlan_1.0.1/src/xmedlan/RelationExtractor.java
   at org.netbeans.api.java.source.TreePathHandle$TreeDelegate.resolve(TreePathHandle.java:459)
   at org.netbeans.api.java.source.TreePathHandle.resolve(TreePathHandle.java:154)
   at org.netbeans.modules.java.hints.Imports.importMultiHint(Imports.java:132)
   at org.netbeans.modules.java.hints.Imports.unusedImport(Imports.java:97)
   at sun.reflect.GeneratedMethodAccessor164.invoke(GeneratedMethodAccessor164.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:483)
   at org.netbeans.modules.java.hints.providers.code.CodeHintProviderImpl$WorkerImpl.createErrors(CodeHintProviderImpl.java:336)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.runHint(HintsInvoker.java:790)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.access$400(HintsInvoker.java:111)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.runAndAdd(HintsInvoker.java:657)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:695)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:256)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:239)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:209)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:182)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:149)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:114)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:83)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:568)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:744)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)