RM Contact Card/Job Responsibilities

Hi, I have been asked to add a subform to the contact card in Relationship Management to show/edit the job responsibilities associated with the contact - instead of having to click Contact->Person->Job Responsibilities to bring up another linked form. I didn’t forsee any problem with this so created a new form for the Contact Job Responsibilities table and added it to the contact card form as a subform control linked on Contact No.->No. The form compiles fine, but refuses to run giving the message : ‘There is no Contact within the filter. Filters: No.: 001, Type: Person’ I have searched high and low but can’t see where the ‘Type = Person’ filter is being applied. As soon as I take the subform control off then the form works fine. Any ideas? Thanks, Jonathan