EClassNotFound = class(EFilerError);
class PASCALIMPLEMENTATION EClassNotFound : public EFilerError
EClassNotFound is the exception class for the failure to find a specified component when reading from a stream.
EClassNotFound is raised if a class name that has not been linked into the current application is encountered when reading a component from a stream. This can happen when a component exists on a form, but has been removed from the type declaration.