From: John Stone (
Date: Thu Dec 31 2020 - 12:58:56 CST

  Do you have the .dat file that was produced during this session?
This is a very unusual sounding problem. I wonder if the Tachyon scene
file got truncated or otherwise corrupted in some way. If you can provide
a sequence of steps that reliably reproduces the problem, I should be
able to fix it. What version of VMD/Tachyon are you using?

Best regards,
  John Stone

On Thu, Dec 10, 2020 at 09:46:13PM +0530, Ashma Khan wrote:
> Dear all,
> we are rendering the image having ColorID in coloring method and isosurface
> for drawing method with isovalue 40 but when we are rendering the image
> using Tachyon, it give me the error
> unrecognized vertex array block `#IO`
> Parser failed due to an input file syntax error.
> Aborting render.
> Info) Rendering complete.
> Anybody can suggest me regarding this and how to render this image
> --
> Ashma Khan
> Research Scholar
> Department of Chemistry
> AMU, Aligarh

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