If you've got SnoopDos try running that just to make sure the installer is looking in the right place, it could for example in a badly written install script be looking in DH0: and not the current place where you have the archive... (it can & does happen)...

Failing that install SFS (it's much better anyway)...

Oops I was trying to click on "Proceed" in the picture there and nothing happened think I need some coffee or a Bovril even...
