Summary: If you have “NSIS” error again and again with different downloaded files, try downloading a previous version from a different stable server.
I also encountered “NSIS” bit-check error in downloading and executing the installer of Studio One 3 (version 3.3.3, the latest) seven times. The downloaded file size is 109,913,644, which should be the complete size, but each download was suspended several times due to a slow internet connection on my side, and the file was resumed.
The server for the latest version presonuscdn-presonus.netdna-ssl.com is often disconnected.
So I downloaded another installer for version 3.3.2 from the server, studioone-archive.s3.amazonaws.com, connected with no interruption, and then the installation successfully completed.
I am afraid that the resume function does not work properly with the presonuscdn server. I hope that the server for the latest version will provide resume function with no file corruption, and that the latest version will be available on amazonaws server for a stable connection.
Thanks.