Sounds like you need to do a repair install.
--
Mike Maloney
BIM Mgr
SSA
RAC 2009/2010
Navisworks 5.5
wrote in message news:6224601@discussion.autodesk.com...
When I go to open Revit 2009, it seems to open,but then a warning comes on
that an irrecoverable error has occured although it is not necessary to
restore files.When I click on this flag to remove it,Revit closes.Please
Help