Hi, I am running galaxy locally and when I perform alignments with TopHat I get the following error: Error in tophat: [Fri Jul 29 17:55:47 2011] Beginning TopHat run (v1.3.1) ----------------------------------------------- [Fri Jul 29 17:55:47 2011] Preparing output location ./tophat_out/ [Fri Jul 29 17:55:47 2011] Checking for Bowtie index files [Fri Jul 29 17:55:47 2011] Checking for reference FASTA file Warning: Could not find FASTA file /tmp/tmp1dXHLG/dataset_26.dat.fa [Fri Jul 29 17:55:47 2011] Reconstituting reference FASTA file from Bowtie index Executing: /bin/bowtie-inspect /tmp/tmp1dXHLG/dataset_26.dat > ./tophat_out/tmp/dataset_26.dat.fa [Fri Jul 29 17:56:39 2011] Checking for Bowtie Bowtie version: 0.12.7.0 [Fri Jul 29 17:56:39 2011] Checking for Samtools Error locating program: samtools I installed the samtools (in several places already), but it seems I did not put it in the right place. So where galaxy search for it? Thank you. Luciano