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CAD tip # 3105:

Question

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	ARX_ERROR: eNotThatKindOfClass when opening a drawing in Architectural Desktop.
	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

* CAD

17.6.2003 21157×

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AutoCAD Architecture

applies to: AutoCAD Architecture · LDT ·

See also:
Tip 12131:	Error: no function definition: VLAX-ENAME->VLA-OBJECT
Tip 8154:	Unknown command MAPWSPACE - cannot start job panel in AutoCAD Map.
Tip 5151:	FATAL ERROR: Commands may not be nested more than 4 deep
Tip 4922:	ARX_ERROR: eNotThatKindOfClass, or eDuplicateKey
Tip 3190:	Errors "ARX_ERROR: eOnLockedLayer" exporting from Architectural Desktop to AutoCAD.

Selected tip: iProject no longer displays the DWF viewer toolbar.

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How to re-enable a disabled Auto Stacked fractions MText dialog in LT? « | » How to shorten a delay in notification of Xref updates?

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CAD tip # 3105:

ARX_ERROR: eNotThatKindOfClass when opening a drawing in Architectural Desktop.