GET-Evidence

When reprocessing a pipeline, the pipeline gets submitted properly but the resultant dataset does not get copied back. From Tapestry, hitting 'Reprocess' from the 'Datasets' page will eventually trigger a call to 'status()' in 'genome_display.php' which checks to see if the local data locator is the same as the current pipeline's (if it's finished). If it it is, it should copy over the resultant new dataset but fails.

From investigation, 'arv-copy' fails if there are files already present that it would overwrite (specifically the 'log' file). Adding the '-f' option will fix this.

Also, when updating the symlinks, the old symnlinks need to be deleted.