# CiviCRM 5.43.1
Released November 11, 2021
- **[Synopsis](#synopsis)**
- **[Bugs resolved](#bugs)**
- **[Credits](#credits)**
- **[Feedback](#feedback)**
## Synopsis
| *Does this version...?* | |
| --------------------------------------------------------------- | -------- |
| Change the database schema? | no |
| Alter the API? | no |
| Require attention to configuration options? | no |
| **Fix problems installing or upgrading to a previous version?** | **yes** |
| Introduce features? | no |
| **Fix bugs?** | **yes** |
## Bugs resolved
* **_Upgrader_: Upgrader crashes when migrating some smart groups ([dev/core#2550](https://lab.civicrm.org/dev/core/-/issues/2550): [#21997](https://github.com/civicrm/civicrm-core/pull/21997))**
* **_Maps_: Map link displays critical error ([dev/core#2942](https://lab.civicrm.org/dev/core/-/issues/2942): [#21980](https://github.com/civicrm/civicrm-core/pull/21980))**
* **_CiviEvent_: `{event.*}` tokens do not render in PDFs for participants ([dev/core#2947](https://lab.civicrm.org/dev/core/-/issues/2947): [#22046](https://github.com/civicrm/civicrm-core/pull/22046))**
* **_APIv4_: Fix failure when joining unusual custom-field-sets. ([dev/mail#103](https://lab.civicrm.org/dev/mail/-/issues/103): [#22051](https://github.com/civicrm/civicrm-core/pull/22051))**
Note: This bug manifested as a crash when loading CiviMail tokens via APIv4. It only affects custom-field-sets where the _internal machine name_ is unusual.
## Credits
This release was developed by the following authors and reviewers:
Wikimedia Foundation - Eileen McNaughton; PeaceWorks Technology Solutions - Martin Hansen; JMA Consulting - Monish Deb,
Seamus Lee; Dave D; Coop SymbioTIC - Mathieu Lutfy; CiviCRM - Coleman Watts, Tim Otten; lishaw1968; @treasurer
## Feedback
These release notes are edited by Tim Otten and Andie Hunt. If you'd like to
provide feedback on them, please login to https://chat.civicrm.org/civicrm and
contact `@agh1`.