Build failure

I have an interesting problem. I have a vb.net project that uses COM objects
which use ADO 2.8. The vb.net project itself uses ADO 2.6. When I rebuild the
COM objects (C++ projects) and then rebuild the vb.net project from a
commandline (using /rebuild parameter), the build fails with an error that I
need to add a reference to ADODB (which there is already one). If I load the
project into VS.NET and update the references to the COM objects and ADODB,
it will compile just fine in the UI but will have the same issue again when
run from a batch file.

Any ideas?

Jim