Dialog 2 differences from Manual

I have the feeling that there aren't many users out there still using Dialog 2, but here goes. My fp2NC is running Dialog 2. I have to admit that I have been using mode 7 almost exclusively for machining for the last few years. I have a project that requires circular interpolation so I have been working through the examples in the operator's manual using mode 8. What I have found is that they don't work as written, and there are some details missing in the manual about how mode 8 works so I don't have a simple program working yet.

First, a simple 2-line program:

Machine is in inch mode, which needs to be set each time the machine is turned on.

N0001 G00 X+12500 Y+00000 Z+20000 S+600
N0002 Z+00030

In mode 8, the display shows line N0002. I found by trial and error that I need to set the line number that mode 8 will start on, it doesn't default to the first line, which is not what the manual says. So I do N0001 transfer then cycle start. It executes line N0001. If I press cycle start to execute the next line nothing happens, which again is not what the manual says. I have to input N0002, transfer, cycle start.

However, line N0002 gives error 73 (main block missing). I tried this several times, starting from scratch, always the same result. Then I modified line 2 to

N0002 Z+00030 F+100 S+600

Now the program works in mode 8. I'm guessing that the Feed and Speed are not really required on line N0002, the problem is that I have told mode 8 to start on line N0002 and it is not a main block. How in mode 8 can I get it to advance to the next line, retaining the main block info from the previous line(s)?

Is it possible that there is a memory problem, or a battery problem, so it is not retaining the main block information? i.e. when I start the program in mode 8 on line 1, I think the real problem is that I cannot continue to press cycle start to execute succeeding lines, it does not advance automatically. There are no errors showing on the display other than the error 73.

I also wonder if the version of Dialog 2 I have is the latest. How do I check?

Here is my latest program, and in this case, line N0012 is causing error 73 while single stepping in mode 8. I haven't yet tried adding feed and speed to that line.