Thanks for your reply. I do have eea.googlecharts 6.2. It is not a fresh Plone site, although it is the first time I have installed any version of eea.daviz.
I went through the quickinstaller and reinstalled the following in this order:
collective.js.jqueryui 1.9.2.0
eea.jquery 6.1
eea.app.visualization 6.1
eea.googlecharts 6.2
eea.daviz 6.1
There was no entry for eea.converter but it seems to be installed. It does give a warning that pdftk is not installed.
When I edit visualizations - daviz-edit.html - I get an error in FF and Chrome:
Uncaught Error: Syntax error, unrecognized expression: [href^=http://www.doc.ks.gov] in eea.jquery.js
Thanks for your help
David