Update to the latest version of aurelius, but I get the following error.
[dcc32 Fatal Error] ConnectionModule.pas(38): F2051 Unit XData.Aurelius.ConnectionPool was compiled with a different version of Aurelius.Drivers.Interfaces.IDBConnectionPool2
The version of aurelius is 5.8.0.0.
TMS Business core Library version 1.31.0.0
TMS Sparkle version 3.19.0.1
TMS XData version 5.0.0.0
Current XData version is 5.5. I'd recommend you uninstall everything, remove all left overs from your hard disk and then download the latest installers for every product and install in the order: BCL, Aurelius, Sparkle, XData.
Did you clean up your library path in Delphi? Please provide more information, your Delphi library path, your project search path, etc, so we can have a better idea of what's going on.