In my mobile app I have an object implementing PropertyBusinessObject which contains numerous other objects also implementing this interface. This object structure is populated by JSON data I am getting back from my server. When I try to write this object to Storage with writeObject() I get the above error. The stacktrace shows it originating in the com.codename1.io.Util.writeObject() method where it is writing UTF-8 (limited to 64k). The developer guide does not reference any potential issues with Storage and recommends it over FileSystemStorage. My question is, is there a workaround/update for this? Would I have to revert to writing out the object structure to the filesystem? Thanks.