Hi Mathieu, I am using 4.2.5 release. Sorry, I always forget to tell... > > void Delete() { delete this; } <---- this one Yes, that fixed the problem. Thanks alot! greets Ingo --- Dr.-Ing. Ingo H. de Boer Polytec GmbH Polytec-Platz 1-7, 76337 Waldbronn, Germany phone: ++49 7243 604 106 fax : ++49 7243 604 255