Why is my license not showing up?

Question

In my <Product> I have:

<WixVariable Id="WixUILicenseRtf" Value="LICENSE.rtf" />

LICENSE.rtf exists, and is an rtf file (I've tried saving with a few different programs in case it was a problem with one of them).

The file contains text (a whole license!), and the text is sensibly formatted.

Why then, is the License field of my installer blank?

Answer 1

It turns out you basically must generate your rtf with Wordpad, or make a perfect replica. Since mine are generated by scripts, I adjusted my script to insert the Wordpad header to the rtf file, and this fixed it.