Plone quickinstaller中未列出已安装的产品

我试图将plone3 data.fs导入plone4，但它出现了此错误

TypeError: ('object.__new__(RateAgainstBaseRate) is not safe, use Persistence.Persistent.__new__()', <function _reconstructor at 0x7fbe8c0e38c0>, (<class 'currency.converter.currency_data.RateAgainstBaseRate'>, <type 'object'>, None)) 

TypeError:（'object.\uuuuu new.\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

我认为在TRU导入db之前移除产品可以解决这个问题。 在plone3中搜索zmi以查找currency.converter时，它会找到：

在/atf/portal\u quickinstaller/currency.converter处安装的产品

虽然当我访问quickinstaller时，它没有列出。文件系统中也没有任何内容

currency.converter位于buildout.cfg的egg部分，但是从那里删除它并重新运行buildout也会导致plone3中出现此错误：

Error Type: TypeError
Error Value: ('object.__new__(RateAgainstBaseRate) is not safe, use Persistence.Persistent.__new__()', <function _reconstructor at 0x7f55e1fa38c0>, (<class 'currency.converter.currency_data.RateAgainstBaseRate'>, <type 'object'>, None))

错误类型：TypeError
错误值：（'object.\uuuuu new.\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

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有关如何删除此产品的任何建议？

通过安装新的0.55版本，我能够重新控制此产品