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This bug was originally marked as duplicate of bug 192088, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 7.1.2 (Build 201204101705) VM: Java HotSpot(TM) Client VM, 20.14-b01, Java(TM) SE Runtime Environment, 1.6.0_43-b01 OS: Windows 7 User Comments: GUEST: session error , can not enter the backstage may be the fault is connection to the sql server Stacktrace: java.lang.IllegalArgumentException: Invalid ClassPath root: file:/F:/????/????????????JAVA/wlck/build/web/WEB-INF/classes/. The root must be a folder.(exists: true file: false directory: true read: true write: true root: null _root: F:\????\????????????JAVA\wlck\build\web\WEB-INF\classes@78d79934:1165fff) at org.netbeans.api.java.classpath.ClassPath$Entry.getRoot(ClassPath.java:806) at org.netbeans.api.java.classpath.ClassPath.createRoots(ClassPath.java:284) at org.netbeans.api.java.classpath.ClassPath.getRoots(ClassPath.java:268) at org.netbeans.modules.web.jsf.editor.index.JsfIndex.<init>(JsfIndex.java:83) at org.netbeans.modules.web.jsf.editor.index.JsfIndex.create(JsfIndex.java:64) at org.netbeans.modules.web.jsf.editor.JsfSupportImpl.getIndex(JsfSupportImpl.java:181)
Created attachment 159828 [details] stacktrace