I have exactly the same problem. Can please some one answer what might be the problem? FW is 2015014 and device is NVR 4ch.
I have this kind of camera:http://www.ebay.com/itm/161499942578?_trksid=p2057872.m2749.l2648&ssPageName=STRK%3AMEBIDX%3AIT
I also have problem with recording when system detects motion. In NVR's UI the red info lights flashes but it doesn't record video to the HDD. HDD's status is okay and I can record scheduled record. Also when the red lights starts to flash, it won't stop when there is no motion anymore and I also have cleared the alarm.
Is there some kind of bug on the UI? When I change motion detection's or schedule record setups and save the changes and after that go back on the same settings, there are again default settings. For example the pull-down menu of copying days or sensitivy of motion detection. Can that might be the problem with recording to HDD?