Rich, this is not a MWE, it requires gensymb.sty and a BST which I didn't have.
This is not a LyX issue It's a LaTeX one, or rather a BST one and you need to look at the BST what it shows there. Look for something like (from another style): FUNCTION {emphasize} { duplicate$ empty$ { pop$ "" } { "\emph{" swap$ * "}" * } if$ } but search for the old ones, of course, ie \bf, \sc and so on... el On 22/08/2019 23:16, Rich Shepard wrote: > Strange situation here and I do not see where to fix it. > > I use JabRef-4.3.1 for my references. I've created a new KOMA-Script report > and used the JabRef -> LyX icon to insert a reference and bibliography > reference. As a test I tried to preview the document only to have lyx tell > me there are deprecated font types, e.g., \sc, in the bibtex entry. > > Looking at the bibtex entry in JabRef I see expected ASCII text in bibtex > format. I tried exporting that entry but did not find a format that printed > in plain ASCII text. Sigh. > > Here's the last few lines from lyx error log: > > ! Class scrreprt Error: undefined old font command `\bf'. > > See the scrreprt class documentation for explanation. > Type H <return> for immediate help. > ... > > l.7 ...l of Fisheries and Aquatic Sciencess}, {\bf > 37}, > > The entire log is attached; so is a MWE. If I need to send the actual JabRef > entry I'll figure out how to provide that in a useful format. > > In LyX the citation type is authordate3. > > Looking at the document's .lyx file I don't see the bibiographic entry at > all. > > Rich