I have just started using Musescore, and I need the Drumline Extension. However, every time I attempt to download and install it, it fails. It downloads to about 25% and then I get this error: Unable to download, save and verify the package. Check your internet connection.
I've tried emptying out more space on my hardrive, closed the program and restarted, made sure my MacBook was up to date. Everything should be fine, but it's not working.