# vtkUnstructuredGridReader paraview frozen
**URL:** https://discourse.paraview.org/t/vtkunstructuredgridreader-paraview-frozen/2299
**Category:** ParaView Support
**Created:** [July 25, 2019, 2:02pm UTC](https://discourse.paraview.org/t/vtkunstructuredgridreader-paraview-frozen/2299 "2019-07-25T14:02:22Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@hgropelli](https://discourse.paraview.org/u/hgropelli)
#### Post date: [July 25, 2019, 2:02pm UTC](https://discourse.paraview.org/t/vtkunstructuredgridreader-paraview-frozen/2299/1 "2019-07-25T14:02:22Z")
i dont know what is happening, can somebody help me?
[my\_file.vtk](https://discourse.paraview.org/uploads/short-url/peqCt7sM0XNSga2KZBKX0ui5T0J.vtk) (3.9 KB)
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [July 25, 2019, 2:19pm UTC](https://discourse.paraview.org/t/vtkunstructuredgridreader-paraview-frozen/2299/2 "2019-07-25T14:19:01Z")
Your data file is malformed. I can’t really make sense of what is in the file. Where did it come from?
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### Author:  [@hgropelli](https://discourse.paraview.org/u/hgropelli)
#### Post date: [July 25, 2019, 3:01pm UTC](https://discourse.paraview.org/t/vtkunstructuredgridreader-paraview-frozen/2299/3 "2019-07-25T15:01:39Z")
so i have a fortran code for discrete elements modeling which prints for the GiD. Now im in process to implement a printer to the paraview. im basis what i have read on documentation im did this:
WRITE(404) “# vtk DataFile Version 3.0”//char(10)
WRITE(404) “Particle Field”//char(10)
WRITE(404) “BINARY”//char(10)
WRITE(404) “DATASET UNSTRUCTURED\_GRID”//char(10)
WRITE(cbuffer,fmt="‘POINTS’,I10,A6)")system%no\_particles,“float”
right after i would print the actual positions and then “POINT DATA” like velocities, spins, angles, radius, temperature…
thanks for your attention
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### Author:  [@hgropelli](https://discourse.paraview.org/u/hgropelli)
#### Post date: [July 25, 2019, 3:03pm UTC](https://discourse.paraview.org/t/vtkunstructuredgridreader-paraview-frozen/2299/4 "2019-07-25T15:03:25Z")
that archive “myfilevtk” which is in the first post should be like this(gid archive, openable in notepad)
[COND3p\_2.post.res](https://discourse.paraview.org/uploads/short-url/kpNudIweytwg7qD9RFSg0NJ0Xjr.res) (306.9 KB)
thank you for your attention
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [July 25, 2019, 4:17pm UTC](https://discourse.paraview.org/t/vtkunstructuredgridreader-paraview-frozen/2299/5 "2019-07-25T16:17:53Z")
How are you opening the file in Fortran? AFAIK, you should `open` it in “direct” access mode to avoid writing a record header for each data array you are writing.
Might I recommend writing a file in ASCII mode first and making sure that works before switching over to the BINARY format?