I finally got the web browser to see the DVR. Had to tell Firefox that port 135 was okay, see How to allow a restricted port. Used address http://192.168.88.150:135 {not https!} and got a black screen. That was progress!
I set the clock back and turned off all the anti-virus programs, still nothing there.
I pulled the hard drive from DVR and plugged it into a SATA to USB converter. I installed the EXTtoIFS program on my computer.
Now I can see the files on the DVR hard drive on my Windows computer. No SpecoPlayer. Nuts.
The DVR drive has an Image folder and an Index folder. The Image folder has *.dvr files and the Index folder has *.idx files.
That's my progress to date.