The software could not save the command changes because multiple people have made overlapping changes. Any changes that you have made since the last save are lost. - Intergraph Smart 3D - Help - Hexagon

Intergraph Smart 3Dx Help
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English
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Intergraph Smart 3D
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3Dx
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Help
Smart 3D Version
13.1

Meaning: More than one person attempted to make changes to the object at the same time.

Recovery: Click Refresh Workspace (F5) Refresh on the General Tab, and then restart the command.