That is, do you agree with W that it is a mistake to look for the use of a sign as though it were an object co-existing with the sign. Again, since the word "occult" doesn't occur in the quoted passage, I'm not clear how it establishes how W uses it. — Ludwig V

I am not sure that I agree but accept that such a judgement is critical to Wittgenstein's enterprise.

"Occult" appears in the preceding paragraph:

But if we had to name anything which is the life of the sign, we should have to say that it was its use.

If the meaning of the sign (roughly, that which is of importance about the sign) is an image built up in our minds when we see or hear the sign, then first let us adopt the method we just described of replacing this mental image by seeing some sort of outward object, e.g. a painted or modelled image. Then why should the written sign plus this painted image be alive if the written sign alone was dead? – In fact, as soon as you think of replacing the mental image by, say, a painted one, and as soon as the image thereby loses its occult character, it ceases to seem to impart any life to the sentence at all. (It was in fact just the occult character of the mental process which you needed for your purposes.) — BB, page 9

The comment: (One of the reasons for this mistake is again that we are looking for a “thing corresponding to a substantive.”) is developed further at page 11, 48, and 72.

The "occult" is what Wittgenstein is militating against. Note the use of "us" in the following:

The sign (the sentence) gets its significance from the system of signs, from the language to which it belongs. Roughly: understanding a sentence means understanding a language.

As a part of the system of language, one may say “the sentence has life”. But one is tempted to imagine that which gives the sentence life as something in an occult sphere, accompanying the sentence. But whatever would accompany it would for us just be another sign. — ibid. page 9

In the penultimate paragraph of the book there is the following:

Let’s not imagine the meaning as an occult connection the mind makes between a word and a thing, and that this connection contains the whole usage of a word as the seed might be said to contain the tree. — ibid. page 110

I will ponder how to express my comments regarding Kant more cogently.

@Ludwig V

In considering the solipsist, I think it is important to keep the "realist" and "idealist" within shooting range. — Paine

Interesting point. I did class them all to be reactions to skepticism, but each are different, so, worth a look. And I’m trying to wrap my head around Kant as the one looking for something stable, which is not us, thus the “object” that is not the object, and the gymnastics start.

I think Wittgenstein understands motives as he understands meaning in general — Joshs

But motives have their own logic (p.15), here compared to causes vs reasons.

Our interests are enacted in situations, — Joshs

I am talking about the interests/desires (and feelings, as reasons) of the skeptic, but that is also a possibility in every one of us (including Witt), and so the “situation” is our situation as humans (the human condition). (I also refer to the interests of our culture, imbedded in the criteria for judgment that hold what matters to a certain practice.)

You seem to want to argue that the picture causes the “disquiet”, which is not what I am talking about. Anyway, the skeptic is “cramped” by the forced analogy (the two senses), from which he creates the picture, but this doesn’t explain why first choose “objects” to analogize, which is the matter at hand. And you’ve given no textual evidence for putting things back to front as you have done—I need more to see the logic. I take Heidegger to be dismissing urges as a cause “a push”; but what I am discussing is exactly the “motive” of the skeptic, what they want/desire (to stand before them), which is the object, the objectivity. Yes, I am conjecturing/hypothesizing fear, but as a “reason”, which is not a cause or catalyst. The force that they can’t avoid is that of the analogy once they choose objects as a framework. As I said Witt deals with these terms in the passage on p.15, quoted above by @Paine.