java.lang.IllegalArgumentException: TreePathHandle [C:\Users\ralph\Dropbox\HvA\Project 1 DT\WinkelApplicatieOut2\src\nl\hva\itopia\officesupplies\products\Products.java] was not created from C:\Users\ralph\Dropbox\HvA\Project 1 DT\WinkelApplicatieOut2\src\nl\hva\itopia\officesupplies\products\Products.java
mine: id=C:\Users\ralph\Dropbox\HvA\Project 1 DT\WinkelApplicatieOut2\src\nl\hva\itopia\officesupplies\products\Products.java@2f153cec:2ad64851, url=file:/C:/Users/ralph/Dropbox/HvA/Project%201%20DT/WinkelApplicatieOut2/src/nl/hva/itopia/officesupplies/products/Products.java
remote: id=C:\Users\ralph\Dropbox\HvA\Project 1 DT\WinkelApplicatieOut2\src\nl\hva\itopia\officesupplies\products\Products.java@7e2c6497:2c47401, url=file:/C:/Users/ralph/Dropbox/HvA/Project%201%20DT/WinkelApplicatieOut2/src/nl/hva/itopia/officesupplies/products/Products.java
   at org.netbeans.api.java.source.TreePathHandle$TreeDelegate.resolve(TreePathHandle.java:451)
   at org.netbeans.api.java.source.TreePathHandle.resolve(TreePathHandle.java:154)
   at org.netbeans.modules.java.hints.Imports.importMultiHint(Imports.java:132)
   at org.netbeans.modules.java.hints.Imports.unusedImport(Imports.java:97)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.netbeans.modules.java.hints.providers.code.CodeHintProviderImpl$WorkerImpl.createErrors(CodeHintProviderImpl.java:303)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.runHint(HintsInvoker.java:788)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.access$300(HintsInvoker.java:111)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.runAndAdd(HintsInvoker.java:655)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scan(HintsInvoker.java:693)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:256)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:239)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:209)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:182)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:149)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:113)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:83)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:559)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:735)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
   at java.lang.Thread.run(Thread.java:722)