Hi all, Since the last updata of Galaxy, I was not able anymore to view newly added tracks to existing or newly created visualisations. In the webhandler, I have traced down this error: 193.191.128.2 - - [14/Mar/2013:11:02:13 +0200] "GET /api/datasets/407a09c0b5976b4e?hda_ldda=hda&data_type=converted_datasets_state&chrom=chr4 HTTP/1.1" 500 - "http://galaxy.bits.vib.be/visualization/trackster?id=1ec2297821c7f2cb" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.22+ (KHTML, like Gecko) Chromium/17.0.963.56 Chrome/17.0.963.56 Safari/535.22+" galaxy.webapps.galaxy.api.datasets ERROR 2013-03-14 11:03:02,409 Error in dataset API at listing contents: : Traceback (most recent call last): File "/home/galaxy/galaxy-dist/lib/galaxy/webapps/galaxy/api/datasets.py", line 41, in show is_true( kwd.get( 'retry', False ) ) ) File "/home/galaxy/galaxy-dist/lib/galaxy/webapps/galaxy/api/datasets.py", line 96, in _converted_datasets_state if not data_provider.has_data( chrom ): File "/home/galaxy/galaxy-dist/lib/galaxy/visualization/data_providers/genome.py", line 814, in has_data st = summary_tree_from_file( self.converted_dataset.file_name ) File "/home/galaxy/galaxy-dist/lib/galaxy/visualization/tracks/summary.py", line 114, in summary_tree_from_file st = cPickle.load( st_file ) EOFError Thanks for any assistance, Joachim -- Joachim Jacob Rijvisschestraat 120, 9052 Zwijnaarde Tel: +32 9 244.66.34 Bioinformatics Training and Services (BITS) http://www.bits.vib.be @bitsatvib