RealChute Parachutes System Mod cancel all parachutes available in part list.
In my opinion there is an incompatibility with Italian version of KSP. It worked in standard english version.

Background

CKAN Version:1.25.3

KSP Version:1.5.1.2335 ITA

Operating System: WIN 10

Have you made any manual changes to your GameData folder (i.e., not via CKAN)? NO

Problem

What steps did you take in CKAN?
Installed Real Chute Parachute System Mod

What did you expect to happen?

What happened instead?
All the parachutes parts disappear both in VAB/SPH. If I disinstall all the parts come back.
This happens after Italian language localization via STEAM.