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CAD tip CAD tip # 9656:

Question CAD 
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Q - question

Inventor: Cannot load library MbUI.dll and RxPart.dll.

A - answer Just after launch, Inventor reports the error "Cannot load library C:\Program files\Autodesk\Inventor 2013\Bin\MbUI.dll" possibly followed by the message "Fatal error; library C:\Program files\Autodesk\Inventor 2014\Bin\RxPart.dll does not exist". This is caused either by a damaged installation or - more probably - by an intrusion of your antivirus program.

Especially Avast! may quarantine these DLL files by mistake and Inventor then cannot be run. Set exceptions for your antivirus.

Comment by DaveMan: You have to go into the statistics section of AVAST, component settings, then virus chest. You will find the Autodesk DLL's in the chest. Right click on the file and choose restore and add to exceptions.

100% *  CAD 
20.1.2014    13111×  
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applies to: Inventor 2014 · Inventor 2013 ·

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 12131:Error: no function definition: VLAX-ENAME->VLA-OBJECT or VLAX-VLA-OBJECT->ENAME
Tip 12127:AutoCAD slower after obeying the recommendation from DELL Precision Optimizer.
Tip 10881:What is the process acwebbrowser.exe resp. Chromium host executable?

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