Hi,
I'm using only a **slightly** newer version of `gsnap` than the one with which the indexes were made - as evidenced here:
```
root@e6ec59c14514:/MToolBox/test# gsnap --version
GSNAP version 201…
The help message of `build_gsnap_index.sh` has the name of the script wrong.
```
>$ ~/MToolBox/build_gsnap_index.sh -h
Usage:
gmap_build_index.sh -D -n -f -k
Mandatory options:
-D Desti…