Hello,
You seem to have several problem, at least two. First the logical unit 1 is the geometry file (not the previous computation file) and the record of 72 characters is the first, the title, so there seem to be something corrupted in the file, or a path error (you can check that a file T3DGEO is in the temporary folder, and is a copy of your original geometry file). Tecplot does not seem able to read it correctly, however Fudaa can, but says that point 9742 has no neighbour. Another potential problem is that your coordinates are very large, now in that case we resort to double precision selafin files, but not all the post-processors are able to plot them.
With best regards,
Jean-Michel Hervouet