# vtkOBJReader - use material string break reader handling of UV

**URL:** https://discourse.vtk.org/t/vtkobjreader-use-material-string-break-reader-handling-of-uv/10276
**Category:** Support
**Created:** [December 20, 2022, 10:42pm UTC](https://discourse.vtk.org/t/vtkobjreader-use-material-string-break-reader-handling-of-uv/10276 "2022-12-20T22:42:14Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Nicholas\_Yue](https://discourse.vtk.org/user_avatar/discourse.vtk.org/nicholas_yue/32/3751_2.png) [@Nicholas\_Yue](https://discourse.vtk.org/u/Nicholas_Yue)
#### Post date: [December 20, 2022, 10:42pm UTC](https://discourse.vtk.org/t/vtkobjreader-use-material-string-break-reader-handling-of-uv/10276/1 "2022-12-20T22:42:14Z")

</div>

I have noticed OBJ with the following types of string in them will break the OBJ reader

```auto
mtllib mesh.mtl
usemtl material0000
usemtl material0001
usemtl material0002
usemtl material0003
usemtl material0004

```

The points position are fine but the UVs that are read in are all getting assigned with UV coordinate of (-1,-1)

Anyone else noticed this ?

I am using VTK 9.2.2 compiled statically on Ubuntu 18.04

Cheers