linqpad无效的高代理人物

Question

  

无效的高代理字符（0xDEF9）。高代理字符必须具有范围（0xD800 - 0xDBFF）的值。

LinqPad中的每个查询都给了我这条消息，我正在运行高级版本，这刚刚开始发生，任何想法意味着什么以及如何诊断问题所在？

这是堆栈：

at System.Xml.XmlEncodedRawTextWriter.EncodeSurrogate(Char* pSrc, Char* pSrcEnd, Char* pDst)
at System.Xml.XmlEncodedRawTextWriter.WriteElementTextBlock(Char* pSrc, Char* pSrcEnd)
at System.Xml.XmlEncodedRawTextWriter.WriteString(String text)
at System.Xml.XmlEncodedRawTextWriterIndent.WriteString(String text)
at System.Xml.XmlWellFormedWriter.WriteString(String text)
at System.Xml.Linq.ElementWriter.WriteElement(XElement e)
at System.Xml.Linq.XElement.WriteTo(XmlWriter writer)
at System.Xml.Linq.XNode.GetXmlString(SaveOptions o)
at System.Xml.Linq.XNode.ToString()
at System.Linq.Enumerable.<GroupJoinIterator>d__6a`4.MoveNext()
at System.Xml.Linq.XContainer.AddContentSkipNotify(Object content)
at System.Xml.Linq.XContainer.AddContentSkipNotify(Object content)
at System.Xml.Linq.XElement..ctor(XName name, Object[] content)
at System.Linq.Enumerable.<>c__DisplayClass12`3.<CombineSelectors>b__11(TSource x)
at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext()
at System.Xml.Linq.XContainer.AddContentSkipNotify(Object content)
at System.Xml.Linq.XContainer.AddContentSkipNotify(Object content)
at System.Xml.Linq.XElement..ctor(XName name, Object[] content)