Hi, I am getting the exception ErrorCode -2147352567 when attempting to call the Session.UIAddMenu method. The error message is pfcExceptions::XToolkitNotFound. Thanks, Colm This thread is inactive and closed by the PTC Community Management Team. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. You may also use "Start a topic" button to ask a new question. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist.