I've been configuring my local instance of galaxy to use trackster according to the instructions on https://bitbucket.org/galaxy/galaxy-central/wiki/Visualization when I run the script: python ./cron/build_chrom_db.py ./tool-data/shared/ucsc/chrom/ I get files that begin with: <META http-equiv="Content-Script-Type" content="text/javascript"> chr1 247249719 chr1_random 166326 ... this causes an error in the browser: "Could not load chroms for this dbkey:" if i delete the first line " <META http-equiv="Content-Script-Type" content="text/javascript">" from the .len file, then trackster works fine. I'm thinking there is a new line the input to build_chrom_db.py that is not getting stripped by this script thanks, Curt Palm ******************************************************* Curtis J. Palm cpalm@stanford.edu Stanford Genome Technology Center MC: 8307 office: 650-812-1994 cell: 408 858-7849 *******************************************************