Can Unity work with Android and Proguard?

I know this has been asked before, but all the posts i can find are quite old.

I am trying to have unity embedded inside a regular android app. This works fine, I have debug build running. But when I try to make a release build with proguard, I get the following error:

java.io.IOException: Can't read [app name/libs/unity-classes.jar(;;;;;;!META-INF/MANIFEST.MF)] (Can't process class [com/unity3d/player/UnityPlayer.class] (Unknown verification type [193] in stack map frame))

I have found this: http://sourceforge.net/p/proguard/bugs/420/?page=0

Which mentions the issue, but the fix supplied there doesn;t work for me. It seems like there is some sort of corruption in the unity-classes.jar file.

Any help getting this to work would be greatly appreciated.