This happened with tecplot outputs from FEHM (pulled from github late november 2021), the tec_to_vtk.jl in its tools, and most up to date Julia. I've had version issues before with Julia and this script, so there may be some change that's borked the convert to DataFrame. Either way, it might be worth some tests with newest Julia version in case the stuff on github isn't functional
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Originally an email from P. Johnson: