I have an assembly where I have added a single mate to a component but subsequently cannot ‘Move Components by Dragging’ even though this box is ticked in Options/Assemblies. Other assemblies behave as expected, they let me move components while obeying whatever mates are in place. I’ve also created a new assembly with the same components and mates, and again this new assembly behaves as expected.  Is there something wrong with my original assembly, or is there another option somewhere which will allow me to drag these parts?

TIA

Maurice

SWorks 2010 SP4