> You have to include also antlr-runtime-3.0.1.jar in the classpath.

Finally, it worked! )

I understand that there is no way to make crossarchitectural application (so it runs on x32 and x64 architectures without any changes).
I have to do different assemblies due to the fact that x64 fbembed.dll not be used as x32 or x32 fbembed.dll not be used with x64 JayBird.
And, of course, I can not get x64 JayBird to work with x32 fbembed.dll.