Duplicate context menu entries on folder shortcuts

I have a folder, called "HG", full of various folder shortcuts which I use as a custom toolbar on my taskbar, system is W7Pro@x64. (The very purpose of that toolbar is to let me access HG repositories on various folders). Recently, the folder shortcuts started misbehaving: on the context menu, there are duplicated some entries (7-zip and antivirus), and some entries are missing (by Murphy's law, one is the "HG Repository explorer", which is the very reason that toolbar exists).

However, when I open the Windows Explorer and navigate to the same folder, the context menu on these same items works just fine.

(Bizarrely, if I click on the taskbar toolbar and select "Open Folder", the context menu is wrong even from Explorer).

See the image below: on the top is the "Good" menu, on the bottom the "Bad" one. Note that on "bad" one, I have some entries which are appropriate for a regular file, but not for a folder (Edit with Notepad++, 7-zip:Open archive...).



I've done the homework and searched the net and this Forum, and a similar problem is described here:

Duplicate context entries when you right-click a shortcut

The catch is, I do have the IsShortcut entry on the lnkfile key:

Code:

[HKEY_CLASSES_ROOT\lnkfile]
@="Shortcut"
"EditFlags"=dword:00000001
"FriendlyTypeName"="@shell32.dll,-4153"
"IsShortcut"=""
"NeverShowExt"=""

A similar problem is described in this thread:

Duplicate Context menu entries in Start menu

but, apparently, was not solved.

My guess is that there is an additional key in HKCR, which covers only the taskbar toolbar shortcuts, which got broken by... something (I installed a lot of stuff recently), probably missing the IsShortcut entry... but which one would that be?

Problem solved, the old-fashioned way: removed and re-added the toolbar from the taskbar. Guess we'll never find out...

I've got exactly the same problem. Same OS. Specifically I get duplicate entries in the context menu for 7-Zip and Notepad++ on File shortcuts.

However, when I open the Windows Explorer and navigate to the same folder, the context menu on these same items works just fine.

(Bizarrely, if I click on the taskbar toolbar and select "Open Folder", the context menu is wrong even from Explorer).

If I use Explorer to navigate to the real location of these shortcuts (which for me is on my D: drive) then the context menu is OK. However, if I select "Open Folder" from the taskbar (or open the same location in Explorer, which is a library shortcut, not the real location) then the context menu is also wrong.

I too think the problem might also be related to installing another app. I installed Dropbox last night and did notice that the taskbar flickered and redrew itself. I left the machine running last night and noticed the problem this morning.

However, removing and re-adding the toolbar on the taskbar has not resolved the problem for me.

In fact, the problem doesn't appear to be limited to taskbar shortcuts. As far as I can tell, any shortcut within the Document/My Documents library seems to have this problem!? However, navigating to its real location and opening the context menu does not have this problem!