Error loading a kettle file through dashboard, path is repeated twice

I've uploaded a Kettle transformation to /public, and when I try loading it through a chart in a dashboard, I get this message :

2015-01-27 13:48:10,765 ERROR [pt.webdetails.cda.settings.CdaFileResourceLoader] Unable to fetch '/public/public/adwords_testing.ktr'.


In fact, anywhere I try to put this file, the path which appears when Pentaho attemps to load it has a duplicate path. Previous errors were :

2015-01-27 11:05:03,167 ERROR [pt.webdetails.cda.settings.CdaFileResourceLoader] Unable to fetch '/public/cde/public/cde/adwords_testing.ktr'.
and
2015-01-27 10:29:44,935 ERROR [pt.webdetails.cda.settings.CdaFileResourceLoader] Unable to fetch '/home/admin/home/admin/adwords_testing.ktr'.

Any idea why it's looking in the wrong place for this transformation?

Thanks!
Ian