So I updated to El Capitan stupidly (I like seeing the new stuff). Some of my daily driver apps are incompatible however, they literally break and bug out. I have only just started making time machine backups since upgrading to El Capitan, this is my idea though.. Reinstall Yosemite, drag and drop app all my old applications back across and all app data for things such as mail and calendars? The rest such as a Safari data will be brought back across by my iCloud. Can anyone confirm if this will work? I haven't updated any of my apps to the latest copies in order to try and save myself here. Thank you.