Can not index

[tuan-tt]

I run sailfish (lastest version) with this command for index phase:
./sailfish index -t ../../index/transcripts.fasta -o ./ -k 31
and get this error

Version Info: This is the most recent version of Sailfish
writing log to ./logs/sailfish_index.log
RapMap Indexer
PARSE ERROR: Argument: -k (--klen)
             Couldn't read argument value from string 'RapMap Indexer'

Brief USAGE: 
   foo  [-n] [-k <positive integer less than 32>] -i <path> -t <path> [--]
        [--version] [-h]

For complete USAGE and HELP type: 
   foo --help

[tuan-tt]

I also try run without argument -k but still get this error.

[tuan-tt]

Use your CentOS binary release and work normally.