Objective c iCloud-核心数据同步问题

我在应用程序的关键阶段遇到了这一错误。 该场景是，主视图使用谓词User==%@，currentUser获取主视图中实体类别的列表

此页面通过icloud在各设备间同步良好

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有一个UserCategory>Field>Entry时间戳，值 是否将此添加到nil或属性上下文？尝试不使用本地属性上下文

是的，显然我添加的上下文没有正确初始化。我真是个跛子！

2012-02-21 06:36:55.573 APPCloud[2403:4923] -[_PFUbiquityRecordsImporter operation:failedWithError:](839): CoreData: Ubiquity:  Import operation ecountered an error: Error Domain=NSCocoaErrorDomain Code=134060 "The operation couldn’t be completed. (Cocoa error 134060.)" UserInfo=0x79ce410 {exception=Illegal attempt to establish a relationship 'forUser' between objects in different contexts (source = <Entry: 0x855eac0> (entity: Entry; id: 0x855e6b0 <x-coredata:///Entry/tDF69E4F8-35DE-4DC1-8077-F5A563FE0DCC1041> ; data: {    comment = nil;
    forField = nil;
    forUser = nil;
    period = 0;
    timeStamp = nil;
    value = 0;
}) , destination = <User: 0x288820> (entity: User; id: 0x232a10 <x-coredata://43C097FE-4A91-42A9-B8EC-CF32D65F7328/User/p1> ; data: {
    birthday = "1999-02-20 21:00:00 +0000";
    entries =     (
        "0x79aa590 <x-coredata:///Entry/tDF69E4F8-35DE-4DC1-8077-F5A563FE0DCC16>",
        "0x2071d0 <x-coredata://43C097FE-4A91-42A9-B8EC-CF32D65F7328/Entry/p1>",
        "0x206bf0 <x-coredata://43C097FE-4A91-42A9-B8EC-CF32D65F7328/Entry/p2>"
    );
    firstName = Samuel;
    fullName = nil;
    height = 0;
    images =     (
    );
    lastName = User;
    male = 1;
    trackers =     (
        "0x797bb60 <x-coredata://43C097FE-4A91-42A9-B8EC-CF32D65F7328/Tracker/p1>"
    );
    uuid = "07110878-F6D3-482D-BC0E-3CE8B4A581E4HGMG";
    years = 0;
}))} while trying to import the log file at the URL: <PFUbiquityTransactionLog: 0x79ca620>