Meaning: Surface frame connection expects two input objects: a supported member and a surface. This error is an internal software failure where not all the inputs were provided to the surface frame connection.
Recovery:
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Open the Structure task.
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Click Select .
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Set the Locate Filter to Frame Connections.
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Select the frame connection in error.
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Select More from the Connection box on the ribbon.
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Click Surface in the tree view and then select Surface-Default in the list view.
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Redefine the end location of the member.