Hi all I'm trying to launch RetroSeq (using ubuntu os).

When I run the command line:

perl retroseq.pl -discover -eref ereff.tab -bam file_sorted.bam -output mysample.candidates.tab

I obtain this msg:

> RetroSeq: A tool for discovery and genotyping of transposable elements
> from short read alignments Version: 1.41 Author: Thomas Keane
> (thomas.keane@sanger.ac.uk)
> 
> Reading -eref file: ereff.tab at retroseq.pl line 158.rence file: rider.fasta

Can you help me please?