Microsoft has listed out the known issues with Office for Mac 2011 on one of the Mac OS X 10.7 Lion , one of the latest version of Operating system from Apple .
Microsoft has outlined the issues the users of the Microsoft’s Office for Mac 2011 might face when upgrading to the new version of Mac Operating System .
As per the Microsoft’s support website ,
There are two major Office for Mac issues Microsoft is aware of running on Lion:
Communicator for Mac crashes when you send an IM or start an audio/visual call.
Note: Microsoft will resolve this issue in an upcoming update to Communicator for Mac.
Office for Mac 2004 will not run on Lion.
Note: Previous MacOS versions supported Rosetta, an Apple Mac OSX bridge technology that enabled applications such as Office for Mac 2004 to run on the latest chip architecture for Mac. Because Lion no longer supports Rosetta, applications that relied on it will no longer function under the new MacOS.
Other issues with the Excel 2008 or 2011 , Word 2008 or 2011 , PowerPoint 2008 or 2011 , Entourage 2008 or Outlook 2011 and Web Applications are also mentioned in the Knowledge base article
Know more about the Known issues with Office for Mac on MacOS 10.7 (Lion) here