# I'm using Ubuntu and I am unable to open a .vtp/.vtu/.vti file that was working previously
**URL:** https://discourse.paraview.org/t/im-using-ubuntu-and-i-am-unable-to-open-a-vtp-vtu-vti-file-that-was-working-previously/15517
**Category:** FAQ
**Created:** [October 8, 2024, 9:01am UTC](https://discourse.paraview.org/t/im-using-ubuntu-and-i-am-unable-to-open-a-vtp-vtu-vti-file-that-was-working-previously/15517 "2024-10-08T09:01:34Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 8, 2024, 9:01am UTC](https://discourse.paraview.org/t/im-using-ubuntu-and-i-am-unable-to-open-a-vtp-vtu-vti-file-that-was-working-previously/15517/1 "2024-10-08T09:01:34Z")
There is a regression in libexpat that makes VTK/ParaView unable to read any XML files.
The error looks like this:
```auto
( 279.351s) [paraview] vtkXMLParser.cxx:375 ERR| vtkXMLDataParser (0x594128ee3790): Error parsing XML in stream at line 44, column 89, byte index 3064: not well-formed (invalid token)
( 279.351s) [paraview] vtkXMLReader.cxx:520 ERR| vtkXMLPolyDataReader (0x594128c28ba0): Error parsing input file. ReadXMLInformation aborting.
```
The impacted version of libexpat are from `2.6.0` to `2.6.2` and if you installed the paraview package, you may impacted.
Potential fixes are:
- Use the binary version of ParaView from [https://paraview.org/download](https://paraview.org/download)
- Upgrade to a more recent version of libexpat
- Downgrade to an older version of libexpat
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 8, 2024, 9:01am UTC](https://discourse.paraview.org/t/im-using-ubuntu-and-i-am-unable-to-open-a-vtp-vtu-vti-file-that-was-working-previously/15517/2 "2024-10-08T09:01:51Z")
More info here: [vtkXMLDataParser broken by expat (#4) · Issues · Arch Linux / Packaging / Packages / paraview · GitLab](https://gitlab.archlinux.org/archlinux/packaging/packages/paraview/-/issues/4)