Thanks Jeremy, I did what you suggested and now it no longer complains! Not sure if I had edited datatypes_conf.xml but just copying the sample worked and let's just hope I did not break any of my changes Regards, Thon Thon deBoer Ph.D., Bioinformatics Guru California, USA |p: +1 (650) 799-6839 |m: <mailto:thondeboer@me.com> thondeboer@me.com Public profile on <http://www.linkedin.com/pub/thon-de-boer/1/1ba/a5b/> LinkedIn From: Jeremy Goecks [mailto:jeremy.goecks@emory.edu] Sent: Thursday, August 22, 2013 11:11 AM To: Anthonius deBoer Cc: sam guerler; Galaxy-dev Galaxy-dev Subject: Re: [galaxy-dev] Why does my trackster complain about not being able to display BED files? Am I missing a converter? Yes, you are missing the bed_to_bigwig converter. If you haven't made changes to your datatypes_conf.xml file, you can just copy datatypes_conf.xml.sample to datatypes_conf.xml to get the needed converters. If you've made changes to datatypes_conf.xml, you'll need to manually add the needed converters. We recently transitioned all the *_to_summary_tree converters to *_to_bigwig, so you'll want to remove the summary_tree converters and replace them with the bigwig converters. And why would a BED file even needed to be converted? Converter = indexer for visualizations. Datasets are indexed so that (a) aggregate (coverage) data is readily available when viewing a large region and (b) finding features in a small region (when zoomed in) is fast. J.