[Tetrapol-kit] tetrapol dump not found and RPCELP question

Hello, i'm correctly installed the files, fréquencies found with RTL-SDR are ok when i launch ./tetrapol_detector.sh

and in the TMP Folder i fond JSON files , LOG Files et BITS files but when i open a log file i read : ./tetrapol_detector.sh: 53: ./tetrapol_detector.sh: ../build/apps/tetrapol_dump: not found

i don't found the tetrapol_dump file. What is the problem ? I think you'll write a better documentation.

And my second question (i you can resolve my missing tetrapol_dump file) is how to use and install the codec RPCELP, and what are the type of files i must using with it ?

Thank you.