Poppers

In technic, I haven't played for a while, roughly a year, and when I tried to redownload all the new stuff, the technic launcher stopped at 'Downloading Launcher Asset: OpenSans+', and I don't know why. Nothing else I've downloading should interfere, and I have the latest java. I'm not very good with errors and bugs, so I'm probably missing something really obvious. Help would be appreciated. (By the way, I'm on a mac.)