I have a main form (Form 1) that includes (2) subforms (Subform 1 and Subform 2). Subform 2 has a command button that opens PopForm 1 as a popup (VBA with use of OpenArgs). When Subform 2 is opened directly as the only form then the command button functions properly. When Subform 2 is opened as part of Form 1 and I click on the command button, I get "2450: cannot find the referenced form '.....'." Could someone please help me?