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Zbigniew Nitecki,
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<div>One writer suggested using Time Machine to revert to the earlier version of TeXLive. </div>
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<div>No. The suggestion was much, much simpler.</div>
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<div>Go to the Configure menu in TeX Live Utility. Select the item "Change Default TeX Live</div>
<div>Version." You will see a list of TeX distributions on your computer. No doubt one is</div>
<div>titled TeXLive-2023, and is selected. But your old distribution will also be there.</div>
<div>Select it instead.</div>
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<div>You have returned to the original distribution before you updated. Typeset. I bet </div>
<div>your problems have gone away.</div>
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<div>If so, you can relax. Then switch back to TeX Live 2023 and fix the problems you</div>
<div>ran into due to the TL update.</div>
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<div>Richard Koch</div>
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