CAD Forum - tips, tricks, discussion and utilities for AutoCAD, Inventor, Revit and other Autodesk products [www.cadforum.cz] ARKANCE | CONTACT - CZ | SK | EN | DE
Over 1.096.000 registered users (EN+CZ). AutoCAD tips, Inventor tips, Revit tips. Try the new precise Engineering calculator. New AutoCAD 2026 commands and variables.

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    30701×  
Comments   Tell a friend

See also:
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.
Tip 13683:Limitations of the LISP language (AutoLISP, VisualLISP) in AutoCAD LT - what to watch out for
Selected tip: Error in the ac1st16.dll file trying to run AutoCAD or Desktop.


Back    All CAD Tips

How to get "Assembly Tools" for Inventor 2010? « | » The many shapes of AutoCAD UCS icons.


Have we helped you? If you want to support the CAD Forum web service, consider buying one of our CAD applications, or our custom software development offerings, or donating via PayPal (see above). You may also add a link to your web - like this "fan" link: CAD Forum - tips, utilities, blocks for Autodesk products
CAD: 
OS: 
Categ: 
Text:
 FAQ
  



Featuring:
Add .CIT raster format support to AutoCAD and Map and Civil 3D
CITin More info


Please use these tips at your own risk.
ARKANCE is not responsible for possible problems that may occur as a result of using any of these tips.
TOPlist
CADfórum
CADforum
Tips, tricks, utilities, help, how-tos and FAQ for AutoCAD, LT, Inventor, Revit, Map, Civil 3D, Fusion, Forma, 3ds Max and other Autodesk software (community support by ARKANCE). See About CADforum.
Copyright © 2025 | Advertise with us | Online privacy
ARKANCE CZ (CAD Studio) - Autodesk Platinum Partner & Training Center & Consulting Services Partner
CONTACT:
webmaster.cz@arkance.world | tel. +420 910 970 111
FB LN TW YT TW Blog RSS
.