March 19th, 2009
Users have reported that after installing Norton 360 version 3 they are unable to launch Vectorworks 2008. This effects users with VectorWorks 12.5.3, VectorWorks 2008 and Vectorworks 2009 running Windows XP or Windows Vista.
** UPDATE **
Symantec Technical Support has since responded with this possible fix.
Edited by JimW