# Problem with Version 4.3.27 **URL:** \ **Category:** PIX4Dmapper Questions/Troubleshooting\ **Created:** [September 12, 2018, 11:38am UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199 "2018-09-12T11:38:10Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![stefano\_sartinini](https://avatars.discourse-cdn.com/v4/letter/s/eada6e/32.png) [@stefano\_sartinini](https://community.pix4d.com/u/stefano_sartinini)\ **Post date:** [September 12, 2018, 11:38am UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/1 "2018-09-12T11:38:10Z")
Hi, I have a problem with the last version (4.3.27). I’m trying to open projects created with Pix4d 4.1.25 but in the new version they are not aligned with the GCPs…Does anybody know why I have this problem? Is there a way to avoid processing again Step 2 and 3?? Thank you so much Stefano ---
**Author:** ![Santiago\_Azcona](https://avatars.discourse-cdn.com/v4/letter/s/ad7895/32.png) [@Santiago\_Azcona](https://community.pix4d.com/u/Santiago_Azcona)\ **Post date:** [September 17, 2018, 1:32pm UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/2 "2018-09-17T13:32:56Z")
I have the same problem. The volumes they are not aligned with the 3d mesh ---
**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\ **Post date:** [September 19, 2018, 7:44am UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/3 "2018-09-19T07:44:43Z")
Hi all, We’re currently investigating this issue and I’ll send you more information once I get updates.   ---
**Author:** ![muhammet\_tuncez](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/muhammet_tuncez/32/270_2.png) [@muhammet\_tuncez](https://community.pix4d.com/u/muhammet_tuncez)\ **Post date:** [September 19, 2018, 9:09am UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/4 "2018-09-19T09:09:04Z")
I have that same problem. this is the chronic issue after Pix4d version update. ---
**Author:** ![Kevin\_Wildman](https://avatars.discourse-cdn.com/v4/letter/k/9fc348/32.png) [@Kevin\_Wildman](https://community.pix4d.com/u/Kevin_Wildman)\ **Post date:** [September 20, 2018, 2:10pm UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/5 "2018-09-20T14:10:22Z")
Can we rollback the update? we are having the same issue while in the middle of a project that needs to go out ASAP.  ---
**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\ **Post date:** [September 20, 2018, 2:36pm UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/6 "2018-09-20T14:36:43Z")
Yes, you can.  1. Go to our website [here](https://cloud.pix4d.com/download/). 2. Click on the Windows/Linux icon. 3. The version 4.2.27 will start to download. ---
**Author:** ![Santiago\_Azcona](https://avatars.discourse-cdn.com/v4/letter/s/ad7895/32.png) [@Santiago\_Azcona](https://community.pix4d.com/u/Santiago_Azcona)\ **Post date:** [September 20, 2018, 8:37pm UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/7 "2018-09-20T20:37:22Z")
The thing is all the proyects that were open in the newest version (altough i didn’t upgrade the version of the software to the proyect)  can’t be opened in the 4.3.27 version. It keeps on oping up the error e0400C. Should we use notepad++ to modify something? Wich line? ---
**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\ **Post date:** [September 21, 2018, 1:41pm UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/8 "2018-09-21T13:41:34Z")
Unfortunately, this time it seems to be not enough to just change a p4dversion in the p4d file.  Our developers are currently reviewing the affected projects to find a solution or a workaround.  I’ll keep you posted here once I get more updates. Thanks ---
**Author:** ![Beata](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/beata/32/187_2.png) [@Beata](https://community.pix4d.com/u/Beata)\ **Post date:** [October 16, 2018, 11:42am UTC](https://community.pix4d.com/t/problem-with-version-4-3-27/7199/9 "2018-10-16T11:42:25Z")
Hi all! I am getting back to you to inform you that the new version of  **Pix4Dmapper 4.3.31 ** with bug fix is out!  You can download it from our website [Pix4D Desktop preview and technical release notes](https://support.pix4d.com/hc/en-us/articles/115005738363-Pix4D-Desktop-technical-release-notes). Cheers!