I have been updated Catalina recently after all most of the application and custom configuration are not functioning. The build macOS 10.15.1 Catalina more secure than previous release. Also system ‘root’ been default as read only (Writeable: No) state. Read more about Catalina release note

Due to security reason uTorrent, BitTorrent client applications stopped working even new release either. In that case Vuze Download could fix them. SUDO access required to install the package so use terminal as sudo to make it work.

Error message: “You must be logged in as root when installing this program”.

For example running Vuze downloader use below comment

Warning: Make sure the package doesn’t has Malware or Malicious codes