I think it may now be working, I just tested the following:
* test
- Inline LaTeX \autocites[11]{someref}[22]{anotherref}
- Latex single line block
#+latex: \autocites[11]{someref}[22]{anotherref}
- Latex code block
#+begin_latex
\autocites[11]{someref}[22]{anotherref}
#+end_latex
LaTeX export succeeded, however I was not able to have it push all the way to pdf (C-c C-e d
). The LaTeX export succeded but it could not convert to pdf (I likely don't have my preamble or packages configured properly for it). I'm assuming if the latex comes out properly it should be able to be possible to get it to result in a pdf if required.
Latex export (missing preamble):
\section{test}
\label{sec-1}
\begin{itemize}
\item Inline \LaTeX{} \autocites[11]{someref}[22]\{anotherref\}
\item Latex single line block
\autocites[11]{someref}[22]{anotherref}
\item Latex code block
\autocites[11]{someref}[22]{anotherref}
\end{itemize}
Assuming this is the output you'd be expecting from that file, I'd guess that the issue has been resolved at some point between 7.6 and 7.8.
Further testing as requested
- Latex code block
#+begin_latex
\cites[11]{someref}[22]{anotherref}
\Cites[11]{someref}[22]{anotherref}
\parencites[11]{someref}[22]{anotherref}
\Parencites[11]{someref}[22]{anotherref}
\footcites[11]{someref}[22]{anotherref}
\footcitetexts[11]{someref}[22]{anotherref}
\smartcites[11]{someref}[22]{anotherref}
\Smartcites[11]{someref}[22]{anotherref}
\textcites[11]{someref}[22]{anotherref}
\Textcites[11]{someref}[22]{anotherref}
\supercites[11]{someref}[22]{anotherref}
\autocite[11]{someref}[22]{anotherref}
\Autocites[11]{someref}[22]{anotherref}
#+end_latex
becomes
\item Latex code block
\cites[11]{someref}[22]{anotherref}
\Cites[11]{someref}[22]{anotherref}
\parencites[11]{someref}[22]{anotherref}
\Parencites[11]{someref}[22]{anotherref}
\footcites[11]{someref}[22]{anotherref}
\footcitetexts[11]{someref}[22]{anotherref}
\smartcites[11]{someref}[22]{anotherref}
\Smartcites[11]{someref}[22]{anotherref}
\textcites[11]{someref}[22]{anotherref}
\Textcites[11]{someref}[22]{anotherref}
\supercites[11]{someref}[22]{anotherref}
\autocite[11]{someref}[22]{anotherref}
\Autocites[11]{someref}[22]{anotherref}
It seems it would therefore be working for all cases
\autocites[11]{someref}[22]{anotherref}
in an empty Org-buffer to get the error for me. If the exporter get past the export phase and tries to compile to LaTeX it will be a success. – N.N.