I saw another thread about a different problem that mentioned this, but it didn't seem relevant to me;
- Brand new computer.
No previous version of Delphi.
Box fresh install of RAD Studio 2009.
Install TChart8.04Delphi2009.
Uninstall/re-install. Same problem.
Hair State = less than before
---- EDIT ----
OK, a fair few hours later;
Delete the file ;
$(BDS)\lib\debug\TeeStore.dcu
And the world will be a nice place again.