@stawo @Kevin_Z I am facing the exact problem now with my NC450. The problem is I am not able to play any past recording while the 24 Hours option is ON. The timeline is completely gone into gray...

@Brook I am been facing this error second time now after 4 months of first card, I got my SD Card replaced just 3 months ago. It was working fine for couple of weeks, 24 hours recording and the...