Word无法SaveAs，错误：类型不匹配。

[ggdayup]

写了个小东西，大开一个word，查找一个字符串，然后替换，最后保存。
但是，老是无法保存，运行到保存的那一行的时候，说“类型不匹配”；
保存的代码如下：

//Save Word.
object savePath=@"c:\\temp\\result.doc";
Word_doc.SaveAs(ref savePath,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref replaceText,ref missing,ref missing,ref missing,ref missing,ref missing);

难道这样不行？有没有什么重命名保存的方法？请各位赐教。

[ggdayup]

全部的代码如下：
[STAThread]
static void Main(string[] args)
{
//Create a word object that we can manipulate
Word.Application Word_app=new Word.Application();
Word.Document Word_doc=new Word.Document();

//Make Word Application Form visible.
Word_app.Visible=true;

Word.Documents docs=Word_app.Documents;

//open a exist word document.
object template="c:\\temp\\test.dot";
object missing=Type.Missing;
Word_doc=docs.Add(ref template,ref missing,ref missing,ref missing);

// define the selection object, find and replace text
Word.Window myWindow = Word_app.ActiveWindow;
Word.Selection mySelection = myWindow.Selection;
Word.Find myFind = mySelection.Find;
object findText = "alow";
object replaceText ="allow";

// Find "alow" and replace with "allow"

myFind.Execute(ref findText,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref replaceText,ref missing,ref missing,ref missing,ref missing,ref missing);

//Save Word.
object savePath=@"c:\\temp\\result.doc";
Word_doc.SaveAs(ref savePath,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref missing,ref replaceText,ref missing,ref missing,ref missing,ref missing,ref missing);

[孟子E章]

是不是office版本问题呢，参考说明
http://dotnet.aspx.cc/ShowDetail.aspx?id=13C874E4-7FC7-4FD1-8CF6-DE9EF4469A9C