Right click breaks windows explorer AND computer window

Reposting here (rather than in Backup thread) to get a broader number of brains.

Pic below.

Unexpected results and crash of Windows Explorer (WE). If I right click on any individual element in the left pane of a WE window, I get a notice: "Windows Explorer has Stopped Working". WE then restarts. I don't have a problem when right clicking on the main headers (Computer, Network, Libraries, or Favorites) in the LH pane, I get the expected menu. Now, if I use left clicks to get the C: drive listed in the right hand pane of WE, and right click it, I get the expected menu.

Background:
I had a pretty reliable clean install of Win 7 64. In the past few days I did a few things
1) Signed up for onedrive, successfully. There's a onedrive icon under favorites, in Windows Explorer (WE)
2) Tried to sign up for homegroup. Complete fail. Cannot get rid if vestiges of some old homegroup. Also, couldn't get homegroup set up to work under Norton 360.
3) Installed Truecrypt 7.1a and installed a secure partition.
4) Installed EASEUS backup
5) Noticed the problem a first time. Tried
a) deleting the truecrypt file and uninstalling TC,
b) deleting EASEUS
c) goofing around with registry entries as others have suggested, including deleting
[HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers\BriefcaseMenu]
@="{85BBD920-42A0-1069-A2E4-08002B30309D}" and then adding it back
d) One or more of these appeared to work, as the right click problem went away.
6) Thought EASEUS was the problem, so installed AOMEI Backupper.
7) And noticed the problem starting again.
8) Removing AOMEI and rebooting did not solve the problem
9) This time, neither removing the reg key, nor reinstalling it, helped.

Any ideas on what causes this issue to happen only in the LH pane?

Thanks.

This is really dissapointing - Systems Repair Engineer seems like a neat program, but it's no longer supported (the website's even gone). Anyone know of a more recent, similar program?

I tried nirsoft's ShellExView and was not able to find a dll to disable that would allow rt click/left pane to work.

I've got to think that this is a bug in Windows. If two different and closely related ways to get the same information (only difference is right pane or left pane) give different results, this is bizarre.

Thanks, all. Well, WE was working correctly yesterday. So I reinstalled OneDrive. This morning, WE crashes on Left Pane Right Click (LPRC, henceforth). So I right click the C: drive (or any other specific file) in the right hand pane, no problem. I get a menu. The same thing in the left half pane, WE crashes and reinstalls.

I installed Windows Explorer++. No crash on LPRC. One differerence is that WE has "Favorites" in the LH pane, with my Onedrive listed. E++ does not have Favorites, but I can view that drive by looking for users\myname\OneDrive. Hmmm.
Given that OneDrive is added to the LH pane, I am wondering if something with OneDrive is causing this crash. I deleted OneDrive from favorites. LHRC still crashes the thing. After it reinstantiates, LHRC still kills WE.

I'm going to uninstall one drive and reboot. Then I'll uninstall spybot and reboot. But I just installed spybot, and the problem begain before that installation.

More info before I go. Here is some of the crash file, from windgb. It starts out useless:

Symbol search path is: *** Invalid ***
****************************************************************************
* Symbol loading may be unreliable without a symbol search path. *
* Use .symfix to have the debugger choose a symbol path. *
* After setting your symbol path, use .reload to refresh symbol locations. *
****************************************************************************

And then adds something that may be useful to you experts:

Loading unloaded module list
.........................................
This dump file has an exception of interest stored in it.
The stored exception information can be accessed via .ecxr.
(b08.d48): Access violation - code c0000005 (first/second chance not available)
*** ERROR: Symbol file could not be found. Defaulted to export symbols for ntdll.dll -
*** ERROR: Symbol file could not be found. Defaulted to export symbols for KERNELBASE.dll -
ntdll!NtWaitForMultipleObjects+0xa:
00000000`76d9186a c3 ret

Callender,

Thanks very much for this. Here's some data:

On another forum (Microsoft) it was suggested that I try a safe boot. Didn't help: problem persisted.

I also reported that (at least yesterday), deleting (or adding back) the following registry key made no difference:
HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers\BriefcaseMenu]@="{85BBD920-42A0-1069-A2E4-08002B30309D}

Further, I reported (words to the effect):
"I had a mind to delete onedrive again, to see if that helped. Before this all, I made a restore point. Then, used regedit to save all the ContextMenuHandlers tags and values (export). Then to Control Panel/Remove Programs to delete onedrive. Noticed that I had installed Onedrive for Business at some point (probably due to MS's strategy to have an install process that is so confusing, you'll end up installing a bunch of c**pware THEY want you to have but that you, in the cold hard light of day, would never want.... But I digress). Decided, "What the heck, why not get rid of all of OneDrive for this test, starting with OneDrive for Business?". So I removed that program. Saved ContextMenuHandlers tags and values into another .reg file. A "comp" command comparing the before and after ContextMenuHandler.reg files showed no difference. On a lark, I checked and now Windows Explorer works fine!

So:
1) LPRC crashes WE.
2) Saved ContextMenuHandlers tags and values in ContextMenuHandler.reg
3) Removed Onedrive for Business
4) Saved ContextMenuHandlers tags and values in ContextMenuHandlerA1.reg
5) Compared the two .reg files. No differences. OneDrive for business doesn't change those flags
6) Checked WE, and now LPRC works just fine, just as one would hope and expect a healthy program to react. "

So, to your point, I did install the registry mod to cause crashdumps for WE crashes. The reporting service was off, I turned it on. But I can't duplicate the crash now!

Any ideas on where the root cause of this lies? It seems very strange that removing a Microsoft product (OneDrive for Business) from a Microsoft Win 7 64 SP1 O/S should fix a problem in a very basic tool.