I generated the same problem accessing your link. After closing the site and regedit.exe in the command line, nothing seems to be wrong. Just the link is wrong in attempting to edit.
Yeas i am able to access regedit.exe ..and i can modify...but unable to Merge *.reg file..and this time i am trying to Merge This "Copy to - Move to" Code: Windows Registry Editor Version 5.00 ;copy to move to [HKEY_LOCAL_MACHINE\WIM_Software\Classes\AllFilesystemObjects\shellex\ContextMenuHandlers\Copy To] @="{C2FBB630-2971-11D1-A18C-00C04FD75D13}" [HKEY_LOCAL_MACHINE\WIM_Software\Classes\AllFilesystemObjects\shellex\ContextMenuHandlers\Move To] @="{C2FBB631-2971-11D1-A18C-00C04FD75D13}" ;Desktop Context Menu add control panel device manager add remove programs [HKEY_LOCAL_MACHINE\WIM_Software\Classes\Directory\Background\shell] @="none" [HKEY_LOCAL_MACHINE\WIM_Software\Classes\Directory\Background\shell\Control Panel] [HKEY_LOCAL_MACHINE\WIM_Software\Classes\Directory\Background\shell\Control Panel\command] @=hex(2):72,00,75,00,6e,00,64,00,6c,00,6c,00,33,00,32,00,2e,00,65,00,78,00,65,\ 00,20,00,73,00,68,00,65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,\ 2c,00,43,00,6f,00,6e,00,74,00,72,00,6f,00,6c,00,5f,00,52,00,75,00,6e,00,44,\ 00,4c,00,4c,00,00,00 [HKEY_LOCAL_MACHINE\WIM_Software\Classes\Directory\Background\shell\Device Manager] @=hex(2):40,00,25,00,77,00,69,00,6e,00,64,00,69,00,72,00,25,00,5c,00,73,00,79,\ 00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,64,00,65,00,76,00,6d,00,67,00,\ 72,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,34,00,00,00 "SuppressionPolicy"=dword:4000003c [HKEY_LOCAL_MACHINE\WIM_Software\Classes\Directory\Background\shell\Device Manager\command] @=hex(2):25,00,77,00,69,00,6e,00,64,00,69,00,72,00,25,00,5c,00,73,00,79,00,73,\ 00,74,00,65,00,6d,00,33,00,32,00,5c,00,6d,00,6d,00,63,00,2e,00,65,00,78,00,\ 65,00,20,00,2f,00,73,00,20,00,25,00,77,00,69,00,6e,00,64,00,69,00,72,00,25,\ 00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,64,00,65,00,\ 76,00,6d,00,67,00,6d,00,74,00,2e,00,6d,00,73,00,63,00,00,00 [HKEY_LOCAL_MACHINE\WIM_Software\Classes\Directory\Background\shell\Add-Remove Programs] [HKEY_LOCAL_MACHINE\WIM_Software\Classes\Directory\Background\shell\Add-Remove Programs\command] @=hex(2):63,00,6f,00,6e,00,74,00,72,00,6f,00,6c,00,20,00,61,00,70,00,70,00,77,\ 00,69,00,7a,00,2e,00,63,00,70,00,6c,00,00,00 but same error
The problem is '\WIM_Software\' I don't know why this key is there but if you replace 'WIM_Software' with 'Software' then the reg file will be merged.