Hi Benjamin, > $X509_USER_PROXY > contained this absolute path: /tmp/globus-tmp.grid239.10425.0 > So, I suppose changing the working directory doesn't affect if the job can > reach the proxy or not. OK, so the job starts fine, but by the time ROOT tries using RFIO the proxy is unset or unusable: that could well be "user error", i.e. a bug in the user code or in code from the CMS framework. Does the _same_ job work elsewhere?