Amazon web services Mechanical Turk命令行工具突然不工作

使用-sandbox标志运行loadHITs.sh已经好几个星期了。但突然间，我发现了这个错误：

...
  Start time: Thu Apr 02 21:47:20 PDT 2015
Error loading HITs: Error executing operation: Error #1 for RequestId: ab85a92a-5771-4b81-8b43-4e7a584c16b5 - AWS.NotYetImplemented: This method is not yet implemented (1428036440673 s)
com.amazonaws.mturk.service.exception.InternalServiceException: Error executing operation: Error #1 for RequestId: ab85a92a-5771-4b81-8b43-4e7a584c16b5 - AWS.NotYetImplemented: This method is not yet implemented (1428036440673 s)
        at com.amazonaws.mturk.filter.ErrorProcessingFilter.processErrors(ErrorProcessingFilter.java:158)
        at com.amazonaws.mturk.filter.ErrorProcessingFilter.execute(ErrorProcessingFilter.java:48)
        at com.amazonaws.mturk.filter.Filter.passMessage(Filter.java:56)
        at com.amazonaws.mturk.filter.RetryFilter.execute(RetryFilter.java:115)
        at com.amazonaws.mturk.filter.Filter.passMessage(Filter.java:56)
        at com.amazonaws.mturk.util.CLTExceptionFilter.sendMessage(CLTExceptionFilter.java:77)
        at com.amazonaws.mturk.util.CLTExceptionFilter.execute(CLTExceptionFilter.java:62)
        at com.amazonaws.mturk.service.axis.FilteredAWSService.executeRequests(FilteredAWSService.java:172)
        at com.amazonaws.mturk.service.axis.FilteredAWSService.executeRequest(FilteredAWSService.java:152)
        at com.amazonaws.mturk.service.axis.FilteredAWSService.executeRequest(FilteredAWSService.java:116)
        at com.amazonaws.mturk.service.axis.RequesterServiceRaw.registerHITType(RequesterServiceRaw.java:440)
        at com.amazonaws.mturk.service.axis.RequesterService.createHITs(RequesterService.java:1512)
        at com.amazonaws.mturk.cmd.LoadHITs.loadHITs(LoadHITs.java:236)
        at com.amazonaws.mturk.cmd.LoadHITs.runCommand(LoadHITs.java:120)
        at com.amazonaws.mturk.cmd.AbstractCmd.run(AbstractCmd.java:148)
        at com.amazonaws.mturk.cmd.LoadHITs.main(LoadHITs.java:55)

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如果我省略了-sandbox标志，同样的命令也可以正常工作。

看起来问题出在亚马逊这边。其他几个人。沙箱现在工作正常