This release fixes an issue where the editor would fail to load if a 3rd party JCE Language Pack was installed but did not include javascript language files for some plugins. Any plugin affected will be disabled and a warning message displayed.
The Administration Component remains unchanged but has been re-released with this version number.
As the only changes are to the Editor Plugin, if upgrading from JCE 1.5.7.2 only the Editor Plugin 1.5.7.3 needs to be installed.