Java Programming

Was just wondering if anyone has had any experience with Proguard - the Java obfuscator and shrinker. My server receives serialized objects and these object's classes have been excluded from obfuscation, however for some reason the serialversionUID gets changed resulting in an invalid class exception. I've tried to eliminate the SerialVersionUID from the being obfuscated but I still have the issue. Is there any way of preventing the serialversionUID from being changed through the obfuscation process.

I know this may be a bit off topic and I was going to post on the sourceforge forums for Proguard but the forums don't appear to be active.

If anyone out there has experience with Proguard I'd be very hopeful for some insights as I have none.

Thanks you very much.