Registry: Cannot create key...
install-us FAQ

"I have specified some keys which are destined to be placed into the registry. But during installation the message occurs 'Cannot create key in...'. What am I doing wrong?"

Answer: Nothing. Applications can only place keys in certain parts of the registry hierarchy. For example: You cannot write to KEY_LOCAL_MACHINE\MyProgram". Try "HKEY_LOCAL_MACHINE\Software\MyProgram" as an alternative.