"IAppServer not yet completely defined" Exception.

[delphiman]

I have used D6 Enterprise and IB6 to create my first Application Server.

For which I used a TRemoteDataModule onto which I have dropped the following Objects:

SQLDataSet1 where the Active Propery is True
IBDatabase1 where AllowStreamedConnected Property is True
TIBDataSet where the Active Propery is True
SQLConnection1 where the Connected Property is True
IBTransaction1 where the Active Property is True.
TDataSetProvider where the Active Property is True

However when I attempt to compile it I get the following exception in a Unit called
"ApplicServer_TLB" which, together with an ominous "Warning" and all manner of
frightening code, appeared in the project without any help from me:

(Error)ApplicServer_TLB.pas(72):Type'IAppServer' is not yet completely defined.

Can someone please throw some light upon what

Unit "ApplicServer_TLB" is and does? (Or refer me to where I can get become more informed.)

Further "defining" I might need to do. Bearing in mind that I have achieved a "True" for all the Active Properties in my Objects?

Thanks in advance.

TERRY