I received an email from WordPress telling me that the Highslide licence was incompatible with the WordPress licence. Unfortunately, I had to remove Highslide from kPicasa Gallery. Sorry for the inconvenience.
Your plugin http://wordpress.org/extend/plugins/kpicasa-gallery has had to be temporarily withdrawn from the WordPress plugin, as it contains code that has not been released under the GPL (or a compatible license)
The file containing the code is: highslide
Plugins are, and have always been, required to be GPL (or compatible) licensed, as clearly stated at http://wordpress.org/extend/plugins/about/