v4.0.2 fixed bugs (from v4.0.1) : 1. Fix the crash issue regarding the docking feature. 2. Fix the crash issue for Find in files feature. 3. Fix the crash issue while pressing close button in Windows dialog (menu "Window->windows..."). 4. Fix the bug that the docked dialog can not be resized by dragging splitter under w98.
http://sourceforge.net/project/downloading.php?groupname=notepad-plus&filename=npp.4.0.2.Installer.exe
