I have attached the CSV. The lines in question are 290 and 291. Create ML will interpret those as 288 and 289, since it's zero-based and excludes the header row. Importing will work with no problems up to that point and will work with no problems if I delete both rows before exporting to CSV. If you open the CSV in Numbers, everything looks fine.
tokens-labels.csv
HullBreach
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In the (hopefully) short-term, I am able to export the Numbers spreadsheet as a TSV and have written up a crude converter to generate JSON from it that Create ML can properly handle. However, that adds an extra step that I would hope could be eliminated by directly exporting from Numbers for use in Create ML.