[O] Args out of range: 0, 1

[SabreWolfy]

Emacs/R is aborting running/exporting an R code block with the message:

Args out of range: 0, 1

in the mini-buffer line. This is triggered when I try to use ascii or print
to output a data structure. I've searched for this error and found it to be
related to converting HTML to text. with a number of posts from several
years ago. What can I do to solve it? I'm using Emacs 23.4.1, Org version
7.9.2, R 2.15.2 on Kubuntu 13.04. I'll try to prepare a minimal example,
separate from my actual input data.