★Why the icons of toolbar in ZWCAD are displayed as question mark?

Issue:

After opening ZWCAD, the icons of the toolbar are displayed as question marks, how to restore them?

Causes:

The DLL files that save the toolbar icons in  ZWCAD were accidentally deleted or blocked by antivirus software.

Solution:

Check if the RibbonIcon*.dll files exist in the installation directory of ZWCAD and if their sizes are normal.

If the files are abnormal, you can copy the files from another computer in the same version to replace them, or you can try to uninstall and reinstall ZWCAD.