Version 1.2.2.1 (2008-2-23)
error occurs by adding new group in option window
tried to fix the problem that shows "QTTabBar failed to open" message

Version 1.2.2 (2008-2-4)
Added:
Tab switcher window ( Ctrl+Tab / Ctrl+Shift+Tab )
Option to enable/disable wheel click on Folder Tree to open new tab (XP)
2 menus added to DesktopTool context menu,
menu by one click/enable application shortcut keys on desktop
Tab text shadow
Drive letter on tab icon
Option to draw toolbar background image stretched on each band
Menu to merge other windows ( in a process )
Update checker
Now ButtonBar has system look
Now explorer won't lock plugin files

*fixed:
Right-Drag&Drop did not work in tab or subfoldertip
Search bar of explorer disappears by tab changing (XP)
Subdirtip excludes hidden folders
Subdirtip menu cancels right-drag&drop menus

Version 1.2.1 (2008-1-8)
Added:
Installer now creates Native Images that improve start speed.
if you're not Administrator of your machine,
run Install_NativeImages.bat as administrator. (optional)
A slight improvement of SubDirTip speed
PluginSDK update (1.2)
new interfaces that can customize search-box behaviour. (IFilter, IFilterCore)

*fixed:
Right click did not work when tab subfoldertip is disabled.
Bold or long title of tab clipped.
Wheel-clicking on shortcut files did not work.
Tab duplicated when restoring tabs.
Adjustment of Tab click timeout.
Tab parent folder tip won't appear if the folder is empty.
Supports drag&drop drives to tab bar.

(1.2.1.1) menu prefix (&) was not properly processed.
(1.2.1.2) d&d problem
(1.2.1.3) On Vista, Explorer falls into infinite loop showing dialogs,
by shell search in locked tab.

Version 1.2 (2007-12-25)
Added:
Tab close button.
Support Drag&Drop to Subfolder tip menu.
drag files on folder and wait for a second, menu pops up
Subfolder tip for tab ( click tab folder icon ).
sub menu pops up by left click
upper level menu by right click
if enabled D&D to tab, drag on tab and wait a second then sub/upper menu show up.
Extended Thumbnail tip.
supports movie files
extensions selectable
text font option
Supports shortcut keys for user assigned applications.
Tab wheel-click actions.
Supports shell tooltips for menu and tab (details with shiftkey down).
Tab ordering <- tab contextmenu
Modeless option dialog.
Exporting settings as a registry file.
Cursor loop in folder view by cursor keys.
'Send to tasktray on window minimized' option.
Network timeout.
Supports scrolling menu by mouse wheel.
On Folder Tree, open a new tab by clicking with shift key down / middle clicking. (XP)
Tab text alignment option. ( left/center )
Menu rendering option. ( Default / Vista style / Xp style )

*fixed:
Subdir tip right click menu problem ( mouse pointer busy on Vista )
Support UAC (Vista)
Pressing Enter key on contextmenu on menus executes original item
Launcher menu arguments does not work after reordering
Drag & drop: fail to create shortcuts
Drag & drop: stability
Seach box: font and size
Seach box: filter synchronization problem
Quality of toolbar background stretching image
Search pane hides (XP)
Window capturing behavior

and too many bugs to remember...