# Error e0400b problem

**URL:** <https://community.pix4d.com/t/error-e0400b-problem/20743>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [December 9, 2021, 12:03pm UTC](https://community.pix4d.com/t/error-e0400b-problem/20743 "2021-12-09T12:03:17Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![talaga.lukas](https://avatars.discourse-cdn.com/v4/letter/t/aca169/32.png) [@talaga.lukas](https://community.pix4d.com/u/talaga.lukas)\
**Post date:** [December 9, 2021, 12:03pm UTC](https://community.pix4d.com/t/error-e0400b-problem/20743/1 "2021-12-09T12:03:17Z")

</div>

The computer turned off while working with pi4d project. Now when i want to open this project it gives me an error.

[Error]: xxx\_03122021.p4d:1:1: error occurred while parsing element

[Error]: Error trying to convert the p4d: Could not read XML from input file

[Error]: Error e0400b: Cannot open project xxx\_03122021.p4d. Invalid format.

I read the other posts but they didn’t help me.  
Can you advise me how to solve it?

---

<div class="post-metadata">

**Author:** ![Nikoleta\_Dimopoulou](https://avatars.discourse-cdn.com/v4/letter/n/53a042/32.png) [@Nikoleta\_Dimopoulou](https://community.pix4d.com/u/Nikoleta_Dimopoulou)\
**Post date:** [December 9, 2021, 12:11pm UTC](https://community.pix4d.com/t/error-e0400b-problem/20743/2 "2021-12-09T12:11:43Z")

</div>

Hi Lukas,

Could you please send us the following?

▸ The quality report (.pdf format): …\project\_name\1\_initial\report\project\_name\_report.pdf  
▸ The project log file (text file): …\project\_name\project\_name.log  
▸ The project file (.p4d): …\project\_name.p4d

What is the license key you are using to log in or the email?

Best,