I purchased new NVR4104-P-4KS2 & Dahua DH-SD59225U-HNI camera a few weeks ago, I have finally got the camera to "Auto Track" but have now this message "Resource is limited, Open video failed" which prevents me from viewing the video anymore, Is this serious? This is from Camera direct, as when NVR is in the system, the AUTO TRACKING ceases to work, can anybody help. Chas