Upate from 'Repris d'injustice'

git-svn-id: http://svn.vuze.com/public/client/trunk@40090 c2c1b7af-1477-405b-86ee-8aefd1fc4dd2
attempted work around for spurious 'failed to create parent directory' error reported

git-svn-id: http://svn.vuze.com/public/client/trunk@40091 c2c1b7af-1477-405b-86ee-8aefd1fc4dd2