Some strange things have been happening on my system over the last few days and was wondering if anyone else had experienced similar?

The first thing I noticed was that rather than recording motion, when I reviewed activity rather than being videos, all content was as jpg files. Secondly, when I checked the Clip Storage, there was an over allocation error. Thirdly, when I checked messages, I could see a MoveFile Error 1117.
I was running version 5.0.6.10 which was very stable for me. All this started happening out of the blue and I haven't made any changes to BI. I tried rolling back to 5.0.4.4 which was also stable. Today I have updated and am now running version 5.0.7.7, but nothing seemed to work. I've tried rebuilding the database and also deleted the database and rebuilt again.
I've attached a couple of pics. Any advice would be very much appreciated

Thanks
Sam