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CAD tip CAD tip # 7384:

Question CAD 
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Q - question

AutoCAD displays: MUST re_cover!

A - answer Instead of the drawing contents, AutoCAD suddenly displays the text "MUST re_cover!" (or "MUST re1/8cover!").

This is the result of the acad.vlx virus! Please first delete any acad.vlx files which can be found in your AutoCAD support path. Do not open any other DWG files.

You can use the RE_COVER (not RECOVER) command in an infected AutoCAD session to restore the DWG file. See also the Autodesk document TS13717811.

100% *  CAD 
1.6.2010    12992×  
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applies to: AutoCAD ·

See also:
Tip 12330:Inventor reports the error "Failed to create folder" or "Error creating the lock file lockfile.lck"
Tip 12136:Security settings for Inventor data files and add-on applications.
Tip 11375:System error: The program can't start because mfc120u.dll is missing
Tip 10612:Revit error: Unable to open because of unresolved pointer references​
Tip 9656:Inventor: Cannot load library MbUI.dll and RxPart.dll.

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