./get-ddsm-mammo not working on Ubuntu 19.04

[Anandamoy Bandyopadhyay]

I am trying to download a DDSM image using this software on Ubuntu 19.04 machine. Encountered the following error:

run-detectors: unable to find an interpreter for ./jpeg.exe
Traceback (most recent call last):
2: from ./get-ddsm-mammo:328:in `<main>'
1: from ./get-ddsm-mammo:278:in `main'
./get-ddsm-mammo:233:in `ljpeg_to_pnm': Could not convert from LJPEG to raw. (RuntimeError)`

```
Both jpeg and jpeg.exe files are given execution permission. Why is the jpeg.exe being executed instead of the jpeg (appropriate for Linux)? Are there any fixes/workarounds to this issue?

Any help would be appreciated.