The updater's “Install” button works only on CotEditor 3.3.0 and later.
To update from an earlier version, download archive from coteditor.com/archives and install it manually.

What's New on CotEditor 3.4.2

release: 2018-06-05

Improvements

trivial: Let input fields in preferences support dark mode (hidden option on the current systems).
non-AppStore ver.: Update Sparkle framework.

Fixes

Fix an issue under OS X 10.11 where the application crashed with the auto completion.
Fix an issue where some syntax keywords were not highlighted correctly.
Improve general stability.
trivial: Fix drawing of capsules for variables in the insertion format setting field.

previous release notes