If the error persists I might suggest to try to obtain a user mode dump to get more information on the crash and see if a third part module is involved in the crash.
You can configure Windows to create user-mode dumps. Create a System Restore Point first.
If you copy and paste the following in Notepad and save as a .reg file (save with the .reg extension and give it any name such as dump.reg), then right-click the .reg file and select "Merge" to add to the registry, a .dmp file at the time explorer.exe crashes should be created in the C:\CrashDumps folder:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps\explorer.exe]
"DumpFolder"=hex(2):43,00,3a,00,5c,00,43,00,72,00,61,00,73,00,68,00,44,00,75,\
00,6d,00,70,00,73,00,00,00
After Explorer (explorer.exe) crashes, can you then make the .dmp file available (provide link) via a public folder on OneDrive or similar site.
Here's a link on using OneDrive:
http://windows.microsoft.com/en-ca/onedrive/sha...
More info on collecting user-mode dumps:
http://msdn.microsoft.com/en-us/library/bb787181(VS.85).aspx
To stop the creation of the user mode dump files run the following registry file:
Windows Registry Editor Version 5.00
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps\explorer.exe]
You can delete the C:\CrashDumps folder anytime.