Release notes - 5.4.26
If you are currently using either version 5.4.16 to 5.4.22 and you are moving to the latest release, you may experience issues updating if you are using ScriptRunner dependent plugins and they are enabled. There are workarounds documented as part of SRCONF-439.
You can avoid this issue simply by disabling dependent plugins BEFORE you update ScriptRunner. You can then simply update ScriptRunner and re-enable your dependent plugins. Once you update to 5.4.26 or later, you will no longer need to perform this workaround.
Adding Compatibility with Confluence 6.11.x