Startup Error and Text Editing Hotfix

This hotfix addresses two issues in AutoCAD LT^® 2010:

• a crash may occur when you launch AutoCAD LT
• a crash may occur when editing text

Description of Problems

• Certain anti-spyware programs may conflict with AutoCAD LT 2010 and cause the application to crash at startup. An unhandled exception error is issued prior to the crash.
• AutoCAD LT may also crash when selecting, editing, or creating text.

Affected Product

NOTE: This hotfix does not apply to AutoCAD^® 2010 and AutoCAD-based products, DWG TrueView™ 2010, and Autodesk^® Design Review.

• AutoCAD LT 2010

Installation Instructions

To install Startup Error and Text Editing Hotfix

NOTE: You must have administrative privileges on your Microsoft Windows operating system to complete the installation process.

1. Close all software applications.
2. Find the product installation folder; for example, C:\Program Files\AutoCAD LT 2010
3. In this folder, right-click the AdWindows.dll file and select Properties.
4. Click the Version tab and confirm the file version. If the file version is less than 2.1.123.78, then proceed with this installation.
5. In the product installation folder, rename the affected files as follows:
   • Right-click the AcWindows.dll file and rename it AcWindows.old.
   • Right-click the AdApplicationFrame.dll file and rename it AdApplicationFrame.old.
   • Right-click the AdWindows.dll file and rename it AdWindows.old.
   • Right-click the AdWindowsInterop.dll file and rename it AdWindowsInterop.old.
6. Based on the version of your product, double-click Startup_Error_LT_Hotfix_32bit.zip or Startup_Error_LT_Hotfix_64bit.zip and extract the AcWindows.dll, AdApplicationFrame.dll, AdWindows.dll, and AdWindowsInterop.dll files to the product installation folder.
7. Right-click the new AdWindows.dll file and select Properties. Click the Version tab and confirm that this file is version 2.1.123.78.

NOTE:

• If the ribbon does not appear when you launch AutoCAD LT, you can display it by using the RIBBON command or the Workspace Switching icon on the status bar.
• To remove this hotfix, delete the new AcWindows.dll, AdApplicationFrame.dll, AdWindows.dll, and AdWindowsInterop.dll files that you downloaded to the product installation folder, and restore the files you renamed in Step 5 to the original names.