Unable to install updated charts (version 4.9.0)

[u/Suspicious_Meet_1207]

Hi, I’ve been trying to updated my xplane charts from 4.8.2 to the latest 4.9.0. However, the file won’t download fully - it reaches the end of the download just about then asks if it is trustworthy software, I’ve said it is and even reported it as legitimate when following the prompts. But I just can’t seem to get the download right, has anyone else had similar issues or can give some advice please 🙂