Node names doesnt exist error when opening h5 file

[juliagorman]

I am able to open the file with all the code about node names uncommented, however if I run the code opening the file with the node names command, I get this error:

[abigrassler]

Your HDF file is probably empty; when stuff isn't set up correctly, it'll spit out an HDF file, but it'll be small (a dozen or so KB). You can use an HDF viewer program to manually verify that the HDF has or does not have data. I can't say how to fix this in your specific case.