Hi,
For the section of code on the left that you've circled, copy the stop variable from the bottom loop, then right click on the input and go to create>>constant. Make sure this is set to false (left click on the constant to change it). This will look a little bit different to what you see in the picture but is functionally the same.
For the error out indicator, right click on the "error out" terminal of the TDMS close function, then go to create>>indicator. Usually if you're not sure about something in LabVIEW, right clicking and looking at the options available will help. As well as this. Ctrl+H will open up the context help menu, giving you a bit more information on anything you hover over with your mouse.
It seems like the stop variable part has been missed out of the tutorial, but the error out is mentioned in step 31. As for the numbering going back to 28, I think this is just a formatting mistake and not because any steps have been missed out.
Best regards,
Jonah Winn
Technical Support Engineer
National Instruments