AutoCAD Mechanical Unhandled Exception, can't load type, followed by fatal error

[Anonymous]

After a new install of AutoCAD Mechanical 2013 on Win7x64, I get the following error as soon as the program starts:

 

Pressing continue results in a fatal error:

 

Pressing OK closes the dialogue box, along with the entire program.

To reiterate, this is a brand new installation. I was not trying to open a file or launch from preexisting settings. I already have Service Pack 2 installed for this program. I have already rebooted the computer to see if this fixed the issue and it has not.

[matthew.d · Accepted solution]

Hi @Anonymous,

Welcome to the community!

Sorry to hear about the issue.

There are several ways to troubleshoot the problem:

• Try opening another drawing.
  If you can open another drawing, the original drawing may be corrupt and require repair.
  See: How to repair corrupt AutoCAD files

• Uninstall any antivirus or desktop locking programs.
  These programs can cause errors in AutoCAD, since they prevent the system environment from working. 

• Reset AutoCAD to defaults.
  See: How to reset AutoCAD to defaults

• Turn off Hardware Acceleration.
  See: Starting AutoCAD-based products without hardware video acceleration

• Update your graphics driver.
  Install the latest graphics driver from your video card manufacturer or use an AutoCAD-certified driver.
  See: How to update your system to the latest certified video driver

• Try logging in under a new Administrator Windows Account.
  If you create a new account and can successfully open the drawing, you can either use that account or rebuild the user profile in Windows.
  See: How to create a new local administrator Windows user account

• If DisplayLink Core software is installed on your system, try uninstalling it.
• Do a full uninstall and reinstall of AutoCAD.
  See:  Remove All Products from a Windows System

• Uninstall and reinstall the .NET Framework.
  See: How to remove and reinstall the Microsoft .NET Framework

• Uninstall and reinstall Visual C++.
  See: How to remove and reinstall Microsoft Visual C++ Runtime Libraries

• Clear the digital signature icons and then uninstall and reinstall the application.
  See: FATAL ERROR: Unhandled Access Violation Reading 0x0000 Exception at 4048b9h

If all the above solutions fail, you may need to ask the Community forum or contact Autodesk Customer Support.

[Anonymous]

I was able to repair this by copying the AcCui.dll from another copy of the program.

That said, I am now getting a message of being unable to load ammgdinterop.dll... copying that one in from the other program doesn't seem to work, nor does modifying the file name as is suggested by the KB. Any thoughts on a next step?