# Problem with iovtk library in the latest versions

**URL:** https://community.freefem.org/t/problem-with-iovtk-library-in-the-latest-versions/619
**Category:** FreeFEM installation
**Created:** [October 19, 2020, 1:37pm UTC](https://community.freefem.org/t/problem-with-iovtk-library-in-the-latest-versions/619 "2020-10-19T13:37:44Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Jacoban90](https://avatars.discourse-cdn.com/v4/letter/j/65b543/32.png) [@Jacoban90](https://community.freefem.org/u/Jacoban90)
#### Post date: [October 19, 2020, 1:37pm UTC](https://community.freefem.org/t/problem-with-iovtk-library-in-the-latest-versions/619/1 "2020-10-19T13:37:45Z")

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Hello everyone,

I recently installed the latest version of the program for windows and when i try to view the generated .vtk file, I am unable to se anythin g. Using the notepad, I mainly see binary data. This problem seems to affect different recent versions of the program.

Attached you have a .vtk file with the aforementioned problem.

Best regards  
Jacob

[scaffold-residual-6.zip](https://community.freefem.org/uploads/short-url/jIyg0JrX44U6dD9P0xnN6DER2EL.zip) (597.4 KB)

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### Author: ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)
#### Post date: [October 19, 2020, 1:41pm UTC](https://community.freefem.org/t/problem-with-iovtk-library-in-the-latest-versions/619/2 "2020-10-19T13:41:45Z")

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Please see [this](https://community.freefem.org/t/vtk-output-problem/606/4) post.