Hi John,
thank you for advise, you are right. The tool was using
<command interpreter="bash">
seqclust-main.sh -s $input -m $mvstup -o $ovstup -d $repeatmasker -v $archive -w $contigs -y $log -x pdffile.pdf -z RMSKtable -r $__root_dir__ -t $summary -u '$summary.extra_files_path' -p $paired -f $prefix -a $sq_rename -l $overlap
I have removed extra_ and it starts to work.
Regards, Pavel