Over 1.109.000 registered users (EN+CZ).
AutoCAD tips, Inventor tips, Revit tips, Civil tips, Fusion tips.
Try the updated Units converter and the new precise Engineering calculator.
New AutoCAD 2026 commands and sys.variables and env.variables,.
CAD tip # 3105:
Question
A
Typically: you are trying to open a drawing from a newer ADT (or LDT) version in older Architectural Desktop (or Land Desktop). Or your drawing contains Xrefs in a newer DWG format.
Save back the original DWG file in an older DWG format, or explode the AEC objects to plain AutoCAD entities (see also ExportoToAutocad).
ADTLDT
17.6.2003
22694×
this tip shared by ARKANCE experts applies to: AutoCAD Architecture · LDT ·
![CAD Forum - tips, tricks, discussion and utilities for AutoCAD, Inventor, Revit and other Autodesk products [www.cadforum.cz] CAD Forum - tips, tricks, discussion and utilities for AutoCAD, Inventor, Revit and other Autodesk products [www.cadforum.cz]](../common/arkance_186.png)

