Was just running into an issue with the Ancient Aether mod crashing on startup, reported it on their page, the mod owner said my Aeroblender version wasn't up to date for their mod to use and yet I made sure to download the 1.0.1 version and not the older one - when I finally decided to try downloading from Modrinth it worked this time, so the only thing I can imagine is that the Curseforge download file might be downloading the incorrect file but with the correct name?