I'm trying to enter upright Greek letters into my equations using the upgreek package (which in turn is part of was – see here).

I'm using LyX 2.3.1 on Windows 10 with MiKTeX 2.9.

I installed the was package, and then updated my LaTeX preamble as follows:


Unfortunately, I don't see a vertical delta, for example, when I type \updelta into an equation. I have updated MiKTeX and reconfigured my LyX file, and also exited and restarted LyX, all to no avail.

What might I be doing wrong, and how can I fix it?

Sincerely and with many thanks in advance.

  • Did you refresh the FNBD? – Bernard Mar 5 at 22:03
  • You’re going to have to forgive me for asking, but what is FNBD and how do I refresh it? – Thomas Philips Mar 5 at 23:17
  • If it’s any help I updated Miktex before downloading was and Reconfigured in LyX – Thomas Philips Mar 5 at 23:19
  • It's an acronym for the File Names Data Base. You can do that from MiKTeX Console, Tasks menu. Click on the corresponding item (both as user and as administrator). – Bernard Mar 5 at 23:22
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    Try to export a small latex example so that we can see the real code. And try to compile the example with pdflatex so that you can show the log. – Ulrike Fischer Mar 6 at 7:38

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