Problems with file type

[zak_711]

I was trying to change the default icon of the folder via Tools; Folder options; File Tipes; Advanced; now I have a little problem; when I try to open a folder of file the explorer open it in a new window; when I changed the icon the actions on the folder were modified: probably I have to delete some reg SZ, as I couldn't restore the default actions on the folder.
Could any help me?
Thanks.

[guinness]

Have you look at FileTypesMan by NirSoft - http://www.portablefreeware.com/?id=1478

[zak_711]

The problem is to restore the default value; as "Folder" and "Folder of files" are two "system apps" I'd like to restore the default value before deleting them. I have made a mistake because I have selected a new action for the type file "Folder of files" "open with explorer.exe".
Now I can't click the button to delete this action for this file type.

[zak_711]

Found it!
HKCR\Directory\shell\
and
HKCR\Drive\shell\
none none none!

I remember now that I could use even fast explorer ( present in DB ).