Build: NetBeans IDE 6.9 Beta (Build 201004200117)
VM: Java HotSpot(TM) Client VM, 16.3-b01, Java(TM) SE Runtime Environment, 1.6.0_20-b02
OS: Windows Vista

User Comments:
GUEST: ??????

GUEST: This problem occurs when..:
- I try to open a project.
- I click on "Add JAR/Folder" in the project properties.
- I try to reinstall NetBeans. But initially installing worked. Now I had to use the zip distribution.

I'm using Windows 7 Professional 64 bit version.

Error happens with following JREs/JDKs:
- Java 6 Update 17 (64 bit)
- Java 6 Update 18 (64 bit)
- Java 6 Update 18 (32 bit)

Something that has changed in my system between first install and now:
I changed some keys in the windows registry in order to hide the libraries (pictures, movies, music, ...) as well as the local home network from the Windows explorer.

Maybe this mixes Java up?




Stacktrace: 
java.lang.NullPointerException
   at sun.awt.shell.Win32ShellFolder2$7.call(Win32ShellFolder2.java:550)
   at sun.awt.shell.Win32ShellFolder2$7.call(Win32ShellFolder2.java:547)
   at sun.awt.shell.Win32ShellFolderManager2$ComInvoker.invoke(Win32ShellFolderManager2.java:518)
   at sun.awt.shell.ShellFolder.invoke(ShellFolder.java:399)
   at sun.awt.shell.ShellFolder.invoke(ShellFolder.java:385)
   at sun.awt.shell.Win32ShellFolder2.getFileSystemPath(Win32ShellFolder2.java:547)