8. Why do I get the error message "A required class was not found in the
system registry" when I install a toolbar?
Our toolbars depend on the Microsoft
system library atl.dll. If this library hasn't been registered
properly then the toolbars can't be intalled.
To solve the problem, try registering
atl.dll manually:
Atl.dll is usually located in the
directory C:\Windows\System32.
Right-click on the file atl.dll,
select “Open with -> Choose Program...”, click Browse and find the
program regsvr32.exe (usually located in C:\Windows\System32).
And then run the toolbar installation
program again.