Error 8-638994 is specific to DVR content, and may be received when attempting to play back a recording for the first time. We're currently working on a permanent fix for this error, but as a workaround, waiting up to 20 minutes to try and play your recording again can resolve the issue. 

If you receive this error at any point when not attempting to watch a DVR recording, please use the link at the bottom of this page to contact us, so we can gather more information regarding the error.