Yes, all works well on my Sun jvm. Another thing – I can’t fully de-obfuscate your stack trace: it’s seems that some names corrupted (you are using Aspose.Words.jdk15.jar, version 2.4.1?). May be your Aspose.Words jar corrupted, may be something wrong with your IBM jvm. Please recheck your environment. If this don’t help I will install IBM jvm for further tests.