rem: dirTree.treeBoxObject.selection.select(0); ChangeDirectoryByURI(GetSelectedDirectory()); 
add:   try { dirTree.treeBoxObject.selection.select(0); ChangeDirectoryByURI(GetSelectedDirectory()); } catch (ex) { ChangeDirectoryByURI(kPersonalAddressbookURI); gAbResultsTree.focus(); } 
context: function SelectFirstAddressBook(){  dirTree.treeBoxObject.selection.select(0);  ChangeDirectoryByURI(GetSelectedDirectory());}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/fd26233979f82786ad999cbf7f9f49086268b9e7/abCommon.js/clean/mailnews/addrbook/resources/content/abCommon.js