v4.2 fixed bugs and added features (from v4.1.2) :

1.  Fix the dockable dialog drag and drop problem under vista.
2.  Add Column mode edition feature (Menu "Edit->Column Editor...").
3.  Fixed "To UPPER/lower case" bug in column mode.
4.  Fix the display bug in User language define dialog.
5.  Add new feature which backups files in a user specific directory. 
6.  Fix TeX syntax highlighting corruption problem while switching off then switching back to current document.
7.  Fix User Define Language extension recognition problem for sensitive case (now it's insensitive).
8.  Add a menu entry to access to notepad++ plugins project page.

Plugins included in v4.2 :

1. TexFX v0.24a
2. Function list v1.2
3. ConvertExt v1.1
4. NppExec v0.2 beta 3
5. Spell checker v1.1
6. Quick text v0.02
7. Explorer v1.4
8. Hex editor v0.84