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CAD tip # 6861:

Question CAD
% platform category

AutoCAD: unwind skipped on unknown exception

When AutoCAD starts or loads a new drawing, the following cryptic error/warning message is displayed:

; error: Unknown exception occurred
; warning: unwind skipped on unknown exception
*Cancel*

This problem is caused by a corrupt or locked CUI (or CUIX) file. It may be the main ACAD.CUI file or one of the partial menu files (Express Tools, Custom.cui, etc.). Replace the corrupted menu file - either manually from a backup (or original media) or by right-clicking on the CUI name in the CUI dialog.

ACAD2010ACAD2009LT2010L2009

* CAD

19.8.2009 9320×

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applies to: AutoCAD 2010 · AutoCAD 2009 · AutoCAD LT 2010 · L2009 ·

See also:
Tip 11743:	How to open a HTML document from AutoCAD?
Tip 11650:	How to add AutoCAD toolbars to AutoCAD Mechanical menus?
Tip 11479:	"Assertion failed" error when launching AutoCAD.
Tip 11145:	AutoCAD: Customization file load failed.
Tip 10808:	How to make transparent icons for my CUI ribbon in AutoCAD 2017.

Selected tip: How to explode an ellipse to a polyline?

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