I have just managed to squeeze out a few updates for JCE 1.5.0 before leaving on a bit of a holiday (including the Dutch Joomla!day on Saturday). I will still provide support via the forums during this period.
These updates should fix the Admin Component install issues (in the JCE Admin Component 1.5.0 RC1 release) and a number of important issues in the Editor Plugin and Media/File Manager plugins.
I hope these releases can bring us closer to a Release Candidate for the Editor Plugin and stability for the 1.5.0 project.
I know I promised the Image Manager Extended and Template Manager plugins too, but these aren't quite ready. I hope to have them out very soon.
There is also a little secret project in the works involving JCE Utilities and the Media Manager....
Thank you for your support, encouragement and help finding and squashing bugs!
Please use only the latest releases of each plugin/component together. Do not mix and match versions. The new Media and File Manager plugin versions are only compatible with beta3 of the Editor Plugin