Mac OS X Launch *Terminal.app* ( UNKNOWN tag: http://www.w3.org/1999/xhtml:nowiki/Applications/Utilities/) Execute the command, cd UNKNOWN tag: http://www.w3.org/1999/xhtml:nowiki"/Library/Application Support/openlink/bin/" Execute the command, oplmgr +stop Retrieve your new Virtuoso license file from an email or ODS briefcase. Replace the old license file with the new license file. (You may delete the old file, or safely retain it in this location by changing the .lic file extension to .lic-old.) Execute the command, oplmgr +start