This update resolves compatibility issues that have been reported while using the software on the latest versions of Mac OS X Snow Leopard (10.6.8) and Mac OS X Lion. It also resolves problems reported by the Customer Error Reporting (CER) utility and other general problems identified after AutoCAD 2012 for Mac was made available. Please refer to the associated readme for more details and installation instructions.
Get SP1 here: DL18344661.
UPDATE: AutoCAD LT for Mac version 2012.1 is also available. Open Mac App Store and check the Updates.