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AutoCAD /AutoCAD LT 2011 Update 1 has been pulled from Autodesk website and what to do if you installed it when it was available
NOTE: AutoCAD and AutoCAD LT 2011 Update 1.1 has been released :
Click for AutoCAD 2011 UPDATE 1.1 is now available
Click for AutoCAD LT 2011 UPDATE 1.1 is now available
Published date: 2010-Aug-27
ID: DL15569738
Applies to:
AutoCAD LT® 2011
On August 23, 2010, Autodesk released Update 1 for AutoCAD LT 2011. Unfortunately, Update 1 introduced an issue when conducting certain operations that may cause AutoCAD LT to shut down. This issue affects a small number of users.
We have removed Update 1 and will reintroduce it in the near future when the issue has been resolved. For customers who have already installed Update 1, the hotfix that resolves this issue has been posted at the following location:
AutoCAD and AutoCAD LT Layer Manager Hotfix
Please be assured that Autodesk is wholly committed to the quality of AutoCAD, and regrets this error.
Error on startup or AutoCAD is not installed properly. Please reinstall immediately
Source: Autodesk Technical Source Document
Published date: 2010-Apr-06
ID: TS1056464
Issue
When you launched the application, it immediately closes. The following error message may or may not be displayed:
This version of AutoCAD was not installed properly and some features may not run correctly. You should reinstall AutoCAD immediately to make sure all features are working properly. Do you wish to continue anyway?
Solution
We’ve discovered one source for this issue that stems from a bad registry entry in the HKEY_CLASSES_ROOT\.png key.
There have been cases where the value in the Content Type key contains a leading space.
In some cases, simply removing that leading space in the value resolves the issue. We don’t know how that value is getting set with a leading space – it is not being done by Autodesk – nor do we know if removing that space affects any other applications, however users who removed the leading space did not report any other issues.
Run REGEDIT
Navigate to HKEY_CLASSES_ROOT\.png
Modify the Content Type value to remove a leading space (if one exists)
If this did not apply to your system or it did not resolve the issue, these errors may indicate a corruption of the Microsoft® .NET Framework. This operating system component is required for several AutoCAD features, including the Properties Palette, Layer Manager, Ribbon, Menu Browser, Tooltips and other features.
To correct this issue:
On the Start menu (Windows), click Settings > Control Panel.
In Control Panel, double-click Add or Remove Programs (Windows 2000/XP) or Programs and Features (Windows Vista).
Uninstall all versions of .NET Framework, beginning with the newest version first.
Reinstall only the version of .NET Framework required for your software version. Refer to the list below for AutoCAD requirements. For vertical products, consult the product installation literature for the required .NET Framework version.
AutoCAD 2008/AutoCAD LT 2008 requires .NET Framework 2.0
AutoCAD 2009/AutoCAD LT 2009 requires .NET Framework 3.0
AutoCAD 2010/AutoCAD LT 2010 requires .NET Framework 3.5 Service Pack 1
AutoCAD 2011/AutoCAD LT 2011 requires .NET Framework 3.5 Service Pack 1
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