Issue:
When opening a drawing in ZWCAD, empty layers appear. Even if objects on this layer (such as a hatch) are forcibly reassigned to a different regular layer and saved, the layer still appears empty upon reopening, indicating that the modifications did not take effect.
Causes:
This phenomenon is typically caused by corruption in the underlying drawing data. When the Object Reference or Handle of an object (such as a hatch) in the underlying DWG database is severely damaged, the object becomes "dangling."
During file saving, the ZWCAD core fails to write the attributes of the damaged object via a valid database pointer, preventing the layer modification from being committed to the database and causing the layer to continuously display as empty.
Solution:
- Run the AUDIT command. Choose Yes.
- Open the Properties panel (shortcut key Ctrl+1), and change its layer to layer 0 or any regular existing layer from the Layer dropdown list.
- Run the PURGE command. In the pop-up Purge dialog box, check Purge nested items.
- Run the SAVEAS command to save the file in a standard DWG version format. Reopen the newly saved drawing.
The empty layer has been successfully cleared and the object modification has taken effect.
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| JP Solution |
★Why do empty layers appear when opening drawings in ZWCAD：https://confluence.zwcad.com/pages/viewpage.action?pageId=345409069