Excel 2008: MSQuery will not work on any version of Excel 2008 on Lion.However, it will not work on other language versions of Excel 2011 on Lion. Excel 2011: MSQuery for English will work on Lion.Excel may crash when you move a sheet from one workbook to another workbook.These issues will likely only be encountered in specific situations or configurations: Here is a list of other known issues that Microsoft is currently investigating. Because Lion no longer supports Rosetta, applications that relied on it will no longer function under the new MacOS. 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.