From http://hudson.openmicroscopy.org.uk/view/Docs/job/BIOFORMATS-docs-merge-stable/481/console

```
Warning, treated as error:
/opt/hudson/workspace/BIOFORMATS-docs-merge-stable/src/docs/sphinx/users/qu-matlab/index.txt:13: WARNING: Explicit markup ends without a blank line; unexpected unindent.
```