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Build: NetBeans IDE Dev (Build 201710250002) VM: Java HotSpot(TM) 64-Bit Server VM, 9.0.1+11, Java(TM) SE Runtime Environment, 9.0.1+11 OS: Windows 10 User Comments: diesil: With Java 9 GUEST: Appeared after IDE was started. GUEST: Trying to open a maven project created in NetBeans 8.2 GUEST: Opening java shell Stacktrace: java.lang.IllegalArgumentException: Key contains code point U+0000 at java.util.prefs.AbstractPreferences.get(AbstractPreferences.java:296) at org.netbeans.modules.maven.queries.MavenFileOwnerQueryImpl.registerCoordinates(MavenFileOwnerQueryImpl.java:176) at org.netbeans.modules.maven.ProjectOpenedHookImpl.registerWithSubmodules(ProjectOpenedHookImpl.java:454) at org.netbeans.modules.maven.ProjectOpenedHookImpl.projectOpened(ProjectOpenedHookImpl.java:161) at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:85) at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:1298)
Created attachment 165360 [details] stacktrace
Created attachment 165694 [details] stacktrace I was creating a new Maven Java Project