Some recent useful knowledge base documents from Autodesk:
AutoCAD 2011 Hotfix for Complex PLine Measurements
For AutoCAD 2011 with Update 2 installed, this hotfix repairs the area calculation problem of polylines positioned at a great distance from the origin.
Get it here: DL18225251
Autodesk 2012 Content Explorer Service Hot Fix 2
This hotfix applies to the Autodesk 2012 Content Explorer Service (Public and Personal) and addresses the following issues:
- In some cases renaming a folder in Windows Explorer, which is currently being watched by the Autodesk Content Service, can cause the service to stop running.
- The Autodesk Content Service could not be started because the size of the database file was larger than the configured maximum size. If you have encountered this issue please follow the steps found in the companion document "Configuring Maximum Database Size in Autodesk Content Service.pdf" after you have installed Hot Fix 2. If you have not encountered this issue these additional steps are not needed.
- Files fail to index when an English Autodesk Content Service is installed on a Turkish operating system.
Get it here: DL18247986
Comparing the drawing-specific system variables of different DWG files
To compare the drawing-specific system variables of two DWGs, you can convert the drawings to DXF and compare them using a tool that can compare text files, for example the free open source program Winmerge.
Full details here: TS17915749
How to find the product key for your Autodesk product
Starting with the Autodesk 2010 product releases, most Autodesk software required both a serial number and product key to successfully install and activate.
Product keys are used to differentiate products that are both sold independently and sold as part of a product suite. For example, a user installing AutoCAD 2010 would use product key 001B1 while a user installing AutoCAD Revit Architecture Suite 2010 (which includes AutoCAD 2010) would use product key 241B1. The same AutoCAD is in both software packages but the product key differentiates one package from the other.
Full details here: TS1105767