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Build: NetBeans IDE 8.1 (Build 201510222201) VM: Java HotSpot(TM) 64-Bit Server VM, 24.80-b11, Java(TM) SE Runtime Environment, 1.7.0_80-b15 OS: Windows 7 User Comments: GUEST: HTML5 Project with Grunt installed. Choose in context menu grunt tasks. Stacktrace: java.lang.ClassNotFoundException: org.netbeans.modules.cnd.debugger.common2.utils.optionw.OptionSet at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
Created attachment 162449 [details] stacktrace
I think the problem is with the update. I would recommend to clean cache dir: <userdir>/var/cache or the userdir itself. In log file I see the problems with Jsp and other classes.