Oracle.DataAccess.Client.OracleException ORA-00911: invalid character when statement has an ";"

This error happens at 2 of our clients sites. Our clients recently applied 10.2.0.4 and the error started after the upgrade. We cannot replicate the error in our development environment, either in 10.2.0.1 or 10.2.0.4. We can remove the ";" and the issue is resolved, but this would cause us to create a new release which we would perfer not to do right now. Is there a setting that can be made that will allow the statement to be processed with the ";"? There must be something since this error is not produced in all our databases, but the ";" is always sent.