NoClassDefFoundError: sun/awt/shell/ShellFolder$Invoker

```
java.lang.NoClassDefFoundError: sun/awt/shell/ShellFolder$Invoker
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Unknown Source)
calls.callStatic(calls:33)
FileChooser.workaround(FileChooser:28)

java.vm.version=1.6.0_03-b05
os.name=Windows Vista
```

Original issue reported on code.google.com by `leo.kuzn...@gmail.com` on 20 Dec 2010 at 6:08
