|BlueDragon/.NET does not support unmanaged CFX tags. An unmanaged CFX tag is a C++ CFX compiled with a standard C++ compiler (in other words, have not been compiled to .NET). C++ CFXs can be recompiled to be "managed" using Visual Studio.NET (or more specifically, managed C++).
See the CFX directory where BlueDragon/.Net is installed for more information on how to compile a CFX (Java or C++) for use with BlueDragon/.NET.
Also, see FAQ 261 for more information on using Java CFXs in .NET.
If you have a CFX that you need to run, but you do not have the source code to recompile it, consider that it may be possible that you can find that CFML has evolved (or a BlueDragon enhancement has been made) to offer a workaround. Also, the .NET Framework libraries may offer an alternative solution to the need.
If there is no choice but to recompile the CFX, and the problem is that you do not own the source for the CFX, we may be able to work with the vendor to help them recompile the CFX for use with .NET. Contact us, or have them do so, at this account.