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CAD tip CAD tip # 6861:

Question

CAD 
 %  platform  category 
A
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.
ACAD2010ACAD2009ACLT2010L2009
100% *CAD
19.8.2009   31344×  
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this tip shared by ARKANCE experts applies to: AutoCAD 2010 · AutoCAD 2009 · AutoCAD LT 2010 · L2009 ·

See also:
Tip 15007:In AutoCAD, the Ortho mode (or Trim) on the Shift key suddenly stopped working.
Tip 14417:Quick calculator on an AutoCAD keyboard shortcut.
Tip 14359:Automatic macro execution when opening a CAD file (AutoCAD, Inventor, Max, PowerMill)
Tip 14135:New special code ^] for menu-macros, easy object selection.
Tip 13822:Fast layer visibility toggle ON/OFF.
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