# .plt File Reading Problems
**URL:** https://discourse.paraview.org/t/plt-file-reading-problems/14140
**Category:** ParaView Support
**Created:** [March 12, 2024, 5:20pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140 "2024-03-12T17:20:36Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@Ercan](https://discourse.paraview.org/u/Ercan)
#### Post date: [March 12, 2024, 5:20pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/1 "2024-03-12T17:20:36Z")
Hello everybody,
I have a fortran code that gives Tecplot outputs, also a grid file with .grd extension. When I try to open these files with Paraview 5.11, I end up getting these errors:
1- "ERROR: In vtkAvtSTMDFileFormatAlgorithm.cxx, line 127
vtkVisItTecplotReader (0x17c732f0): Unable to find any meshes
2- ERROR: In vtkExecutive.cxx, line 741
vtkPVCompositeDataPipeline (0x176a42a0): Algorithm vtkFileSeriesReader (0x17bdf390) returned failure for request: vtkInformation (0x17c580f0)
Debug: Off
Modified Time: 513768
Reference Count: 1
Registered Events: (none)
Request: REQUEST\_DATA\_OBJECT
ALGORITHM\_AFTER\_FORWARD: 1
FORWARD\_DIRECTION: 0
I also tried version 5.12 and the first error remains but the second one changes as:
2.1- ERROR: In vtkExecutive.cxx, line 729
vtkPVCompositeDataPipeline (0x6eae0b0): Algorithm vtkFileSeriesReader (0x76def30) returned failure for request: vtkInformation (0x776ef80)
Debug: Off
Modified Time: 543629
Reference Count: 1
Registered Events: (none)
Request: REQUEST\_DATA\_OBJECT
ALGORITHM\_AFTER\_FORWARD: 1
FORWARD\_DIRECTION: 0
I am using Ubuntu 20.04.6
How can I solve these issues?
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 13, 2024, 11:09am UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/2 "2024-03-13T11:09:21Z")
Please share your data, also use the last release of ParaView, 5.12.0
---
### Author:  [@Ercan](https://discourse.paraview.org/u/Ercan)
#### Post date: [March 13, 2024, 12:28pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/3 "2024-03-13T12:28:01Z")
[ae2d.grd](https://discourse.paraview.org/uploads/short-url/e1XoSPbrnZJyTW9ZDXcMFcIM1ov.grd) (29.3 KB)
[ae2d\_flow.plt](https://discourse.paraview.org/uploads/short-url/amgtCaxIH7IKEKmXQyIHIqB2qeT.plt) (117.8 KB)
I attached .grd and .plt files.
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 13, 2024, 12:39pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/4 "2024-03-13T12:39:51Z")
ParaView expect a `.plt` file to be a Tecplot Binary File, although your file clearly is not.
However I have a different issue when I read your file with ParaView 5.12.0:
```auto
ERROR: In vtkVisItTecplotBinaryReader.cxx, line 135
vtkVisItTecplotBinaryReader (0x16fe2140): There was an error opening /home/glow/data/tmp/ae2d_flow.plt. It may be an invalid file.
```
---
### Author:  [@Ercan](https://discourse.paraview.org/u/Ercan)
#### Post date: [March 13, 2024, 12:55pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/5 "2024-03-13T12:55:20Z")
Well, like I said this is the output of a Fortran code more than 15 years old. I cannot share the code but in the store subroutine it uses the commands below, which I donโt know what they mean.
```auto
format(a10)
format(7e18.11)
```
Unfortunately, we were able to open the solution files only with Tecplot.
Since there are numerous errors, I guess there is no way we can open these files with Paraview, right?
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 13, 2024, 12:58pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/6 "2024-03-13T12:58:49Z")
Iโm afraid not, but maybe these file can be converted to a format that ParaView understand.
---
### Author:  [@hngnet](https://discourse.paraview.org/u/hngnet)
#### Post date: [March 13, 2024, 1:42pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/7 "2024-03-13T13:42:51Z")
[ae2d\_flow.dat](https://discourse.paraview.org/uploads/short-url/3uC2H4sQ0lYw4U83BOmz0kHMmSB.dat) (117.8 KB)
[ae2d.grd](https://discourse.paraview.org/uploads/short-url/e1XoSPbrnZJyTW9ZDXcMFcIM1ov.grd) (29.3 KB)
I used Tecplot a few years ago. The ASCII version of the PLT file is the DAT file. I changed .plt to .dat and fixed a line. It works fine now!
Cheers,
Hom Nath
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### Author:  [@Ercan](https://discourse.paraview.org/u/Ercan)
#### Post date: [March 14, 2024, 5:43pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/8 "2024-03-14T17:43:18Z")
Thank you so much! If I am not asking too much, what line did you fix? Was it the files or Paraview? If it was Paraview how did you change it?
I will be modifying the code over and over again for a while for my research and try to have outputs. I would like to use Paraview for post-processing.
---
### Author:  [@Ercan](https://discourse.paraview.org/u/Ercan)
#### Post date: [March 15, 2024, 6:12pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/9 "2024-03-15T18:12:42Z")
Oh okay, I think I figured it out. I guess you just fixed the line where the parameters are listed in the .dat file.
Thank you again ๐
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### Author:  [@hngnet](https://discourse.paraview.org/u/hngnet)
#### Post date: [March 16, 2024, 2:15pm UTC](https://discourse.paraview.org/t/plt-file-reading-problems/14140/10 "2024-03-16T14:15:33Z")
Correct ๐