Thanks. I can reproduce problem with fresh install of Win10 2004.
I've filed a bug for further tracking: https://dev.copyhandler.com/browse/CH-369
I'll try to take a look at it tomorrow.
Module
chext64.dll
API
RegOpenKeyExW ( HKEY_CLASSES_ROOT, "Directory\Shellex\DragDropHandlers", 0, KEY_ALL_ACCESS, 0x0000000000b3e198 )
Return Value
ERROR_FILE_NOT_FOUND
Error
2 = The system cannot find the file specified.
