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CAD tip CAD tip # 4482:

Question CAD 
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Q - question

CUI: MNU/MNS Conversion failed.

A - answer Exception: System.NullReferenceException: Object reference not set to an instance of an object. (menu_yyparse)

The converted menu file has probably wrong internal structure. E.g. the individual menu items may share non-unique ID/Names, missing Menugroup name, improperly used <- ...

Fix your .mnu/.mns file and retry the conversion into CUI.

100% *  CAD 
21.6.2005    13252×  
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applies to: AutoCAD 2006 · AutoCAD LT 2006 ·

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.

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Internal error: 2381 (or 2359) during installation. « | » The CUI file you are attempting to open is invalid.

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