Not sure if this will resolve your issue.
Just adding the bouncycastle jar to the project wont cause it to be considered as a provider, you need a tiny bit of java (or could use javaobject) to add it to the security providers.
#AdditionalJar: bcprov-jdk15on-158.jar
.....
#if java
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import java.security.Provider;
import java.security.Security;
static{
Provider BC = new BouncyCastleProvider();
Security.addProvider(BC);
}
#End If