# Visualizing multiblock dataset only shows single processor block
**URL:** https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445
**Category:** ParaView Support
**Created:** [May 29, 2020, 5:00am UTC](https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445 "2020-05-29T05:00:31Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Henry\_Han](https://discourse.paraview.org/u/Henry_Han)
#### Post date: [May 29, 2020, 5:00am UTC](https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445/1 "2020-05-29T05:00:31Z")
Hi,
I apologize if this is an elementary question. I’m attempting to visualize a multiblock dataset using the tecplot reader. When I open the file and hit apply, only the first block is shown. Am I missing a setting to have all datablocks appear? I upgraded from 5.2 to 5.8 and it used to automatically show all the blocks when I hit apply. My professor installed the original version so I’m not sure if there’s a setting I’m missing in my upgraded version. Any help is greatly appreciated!
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 29, 2020, 5:29am UTC](https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445/2 "2020-05-29T05:29:35Z")
There is nothing specific to do to read all the blocks. See this file as an example :
[3dgeom.dat](https://discourse.paraview.org/uploads/short-url/30JWxI0PQJHKcYzwoFFAP5zrCMa.dat) (966 Bytes)
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### Author:  [@Henry\_Han](https://discourse.paraview.org/u/Henry_Han)
#### Post date: [June 3, 2020, 4:42am UTC](https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445/3 "2020-06-03T04:42:46Z")
@mwestphal I opened your file and I saw two parallel plates for the 0 and 1 blocks. Were there supposed to be more blocks? When I open my group of tec files, it seems it’s only opening the first one in the sequence and only displays a single block. I assume there is a simple setting I’m missing somewhere.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 3, 2020, 4:47am UTC](https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445/4 "2020-06-03T04:47:53Z")
Please share a file that shows the issue.
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### Author:  [@Henry\_Han](https://discourse.paraview.org/u/Henry_Han)
#### Post date: [June 3, 2020, 7:44pm UTC](https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445/5 "2020-06-03T19:44:07Z")
Here’s the first time step. When I load it, it only shows the first block of the mesh.
> **[M-0001.zip](https://drive.google.com/file/d/1XS0TqNuOU1QI7B8mKXaue3ojGE4o1aXo/view?usp=sharing)**
>
> Google Drive file.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 4, 2020, 3:13am UTC](https://discourse.paraview.org/t/visualizing-multiblock-dataset-only-shows-single-processor-block/4445/6 "2020-06-04T03:13:56Z")
Well, when you open the file, there is an error that says :
```auto
ERROR: In /home/buildslave/dashboards/buildbot/paraview-pvbinsdash-linux-shared-
release_superbuild/build/superbuild/paraview/src/VTK/IO/Geometry/vtkTecplotReader.cxx, line 2179
vtkTecplotReader (0x5b256d0): /home/glow/Downloads/M-0001.tec:
The record type X found in the file is unknown.
```
So I think either your file is faulty or there is a bug/missing feature in our reader.
That being said, I take a quick look at the file and did not see multiple blocks inside.
To have some insight on this, can you open your file with another software to check it does contains multiple blocks and if X is read correctly ?