64bit versions of windows have different keys for 32bit programs, and by default kix will check those if you do not turn on "WOW64AlternateRegView".

$RC=setoption("WOW64AlternateRegView","On")

You will likely need to upgrade to a newer version of kix. I think "WOW64AlternateRegView" was introduced in the 4.6x series of kix.