[OS X Emacs] Unexplained change in Aquamacs behavior

[Roger Lipsett]

Recently, the Aquamacs editing screen on my Macbook changed from

> [image: Inline image 1]
> to
>
>
> [image: Inline image 2]
> The dates and contents of Preferences.el  and customizations.el have not
> changed.
>
> As you can see, there are multiple differences: the two icon bars are
> different, and the subscripting and superscripting styles are different. In
> addition, the indenting behavior has changed, though of course you can't
> see that here.
>
> Note: these screenshots are actually from two different machines, but the
> second one used to look like the first one :) Both machines are running
> macOS 10.12.6, Aquamacs 33.3. The second machine (responsible for the "bad"
> screenshot above) says that AucTex 11.92 is installed (looking at the
> Manage Emacs Packages list in the Aquamacs menus; the first machine does
> not claim AucTex is installed, though I believe it is).
>
> I noticed a post reporting a similar problem on the Emacs StackExchange
> site in January, but nobody responded.
>
> Any ideas?
>
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