I'm very late but I had the same thing happen to me and how I solved it was, click the '^' on the download file and uncheck "Always open files of this types" ^^
2020-04-07 13:59:47 +0000 UTC
you don't need an app for .package files. simply drag and drop into your mods folder :)
Avery Grace
2020-03-25 17:17:08 +0000 UTC
Has anyone ever gotten this error while downloading cc? My computer just started doing this. This file doesn't have an app associated with it for performing this action." It wont let me download most cc.