Hi Lazlo,
since the link to github doesn't work anymore, I post an issue here:
I found a problem with the "delete" button in the planner plugin.
When clicking on the delete button in the messages list of RC, the messagetoolbar disappears, probably because of the code:
$('a.delete').live("click", function () {
rcmail.http_post('delete', '_id=' + $(this).parent().attr("id"));
$(this).parent().remove();
});
Also the CSS of the planner styles the "delete" button of RC - in theme "Larry" the button then was not shown at all.
I changed all occurences of "delete" to "planner_delete" now the plugin works fine with RC!