: This error frequently appears immediately after a DST change. Ensure the time on your NVR matches your computer's time.
This is a known quirk. Smart PSS ships with its own version of the NetSDK DLLs. Sometimes, a newer version of the SDK breaks old firmware.
In short, the software is saying: "I asked the recorder for the video, but the recorder replied with an error I don't fully understand."
Are you seeing this error or a power outage ? Smart PSS Error Help | IP Cam Talk