Midiverb

Hi, I have a problem with 2 Alliance plugins under Sonar: - Black Box HG2 - SPL Iron. After installation I found them in the plugin manager and assigned them one to 'Distortion' and the other to 'Dynamic'. But when I want to put them on a track, I don't find them in these categories or anywhere else. I uninstalled/reinstalled each plugin several times as well as Sonar itself, with no result. Has anyone reported this problem? How did you solve it? Thank you in advance for your answers. Yves