I created a custom workflow activity (action) for SharePoint Designer. I deployed the assembly to the GAC, added the entry in the web.config file and created a .ACTIONS file in the 12hive (sub)folder. When I now open SPD and create a new workflow I can see my workflow action but when I select it the "sentence" is not shown. I checked it all but cannot find what I'm doing wrong. Any help would be highly appreciated!
Download the sourcecode and config-files here