# CiviCRM 5.4.1

Released 25 Aug 2018

- **[Synopsis](#synopsis)**
- **[Bugs resolved](#bugs)**
- **[Credits](#credits)**
- **[Feedback](#feedback)**

## <a name="synopsis"></a>Synopsis

| *Does this version...?*                                         |         |
|:--------------------------------------------------------------- |:-------:|
| Fix security vulnerabilities?                                   |   no    |
| 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** |

## <a name="bugs"></a>Bugs resolved

* **(dev/core#316) Fix crash on Memcache systems when session key involves whitespace ([12653](https://github.com/civicrm/civicrm-core/pull/12653))**
* **(dev/core#304) Fix crash in upgrading option-group data on some Drupal/Views configurations ([12649](https://github.com/civicrm/civicrm-core/pull/12649))**
* **(dev/core#273) Fix SMS failure and handling of `do_not_sms` ([12654](https://github.com/civicrm/civicrm-core/pull/12654))**
* **Fix quirks in upgrader UI ([12675](https://github.com/civicrm/civicrm-core/pull/12675))**

## <a name="credits"></a>Credits

This release was developed by the following authors and reviewers:

Australian Greens - Seamus Lee; Chris Burgess; Christian Wach; Circle Interactive - Dave Jenkins; CiviCRM - Coleman
Watts, Tim Otten; CompuCorp - René Olivo; MJW Consulting - Matthew Wire; Progressive Technology Project - Jamie
McClelland; Wikimedia Foundation - Eileen McNaughton

## <a name="feedback"></a>Feedback

These release notes are edited by Tim Otten and Andrew Hunt.  If you'd like to
provide feedback on them, please login to https://chat.civicrm.org/civicrm and
contact `@agh1`.