Build: NetBeans IDE 8.0 (Build 201403101706)
VM: Java HotSpot(TM) 64-Bit Server VM, 25.5-b02, Java(TM) SE Runtime Environment, 1.8.0_05-b13
OS: Windows 7

User Comments:
-Silver-: This bug is always reproducible with my Netbeans configuration so if you need more details or a particular test feel free to ask me.

STEPS TO REPRODUCE THE BUG:
1) Start Netbeans.
2) From the menu bar go to Tools -> Options 
3) In the option panel go to Editor -> Hints

At this point the exception is thrown and the hints panel is not shown (it's empty).

ADDITIONAL INFO:
At this point if I close the option panel (pressing the "Cancel" button) and then I try to reopen it (menubar Tools -> Options) an exception occurs and the option panel is not reachable anymore (the entire option panel, not only the "Hints" tab of the option panel) if I don't restart Netbeans.




Stacktrace: 
java.lang.ClassNotFoundException: org.netbeans.modules.options.editor.spi.OptionsFilter$Acceptor
   at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)