Org Mode Beamer Export

While preparing some lecture notes in Org mode to be exported using Beamer, this error message confused me today and prevented the pdf being built.

! Undefined control sequence.
\beamer@saveanother ->\let \beamer@savedif 
                                           =\ifbeamer@anotherslide

Turns out it was generated by a heading having no content only a tag like this.

* :tagonly:

Koln Concert by Keith Jarrett

The recording of Keith Jarrett's concert in Koln in January 1975. Continue reading

Let Go by Avril Lavigne

Published on October 12, 2017

The Art of the Trio Volume 2 by Brad Mehldau

Published on October 05, 2017