Missing plug-ins in InDesign – Typefi Support

If, when opening an InDesign document, you get a Missing Plug-ins alert that says you are missing the mt.core.Styles.InDesignPlugin and mt.core.Templates.InDesignPlugin plug-ins, you need to install MathTools Reader.

Missing plug-in alert — The document uses one or more plug-ins which are not currently available on your system. We strongly advise you not to open the document. Do you want to open anyway?

MathTools Reader is a free installation of movemen MathTools. MathTools Reader is required to open any MathTools-enabled InDesign document.

If InDesign is open, close it.
Go to the MathTools Reader website and download the Reader installer. Make sure to install the MathTools package that matches your InDesign version. If you are using Microsoft Windows, unblock it.
Extract the downloaded archive into the Plug-Ins folder of your InDesign installation.
Open InDesign.

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