A99 and Apple Preview App?
On the Apple platform, the RAW converter is part of the OS. As the other respondent asked: what version of the OS are your running?
Whichever it is, run "Software Update" or go to the App Store and click the "Updates" tab. Install all available updates.
-- Kirby Krieger.
|High Altitude Rocky Mountain Railroad by cjf2|
from On the Rails...
|Evening at the lake. by Murat ÜNSAL|
|Antillean Crested Hummingbird refuelling by hwvlover|