调试时出错System.TypeInitializationException

Question

当我处理我从朋友处获得的代码时出现以下错误，您认为这是一个环境设置问题吗？

错误消息显示在：com.lowagie.text.pdf.PdfWriter.getInstance(Document document, Stream os)

错误讯息：

System.TypeInitializationException occurred
HResult=-2146233036
Message=The type initializer for 'com.lowagie.text.pdf.PdfWriter' threw an exception.
Source=iTextdotNET
TypeName=com.lowagie.text.pdf.PdfWriter
StackTrace:
    at com.lowagie.text.pdf.PdfWriter.getInstance(Document document, Stream os)
    at ABCSystem.PDFCreator.Create() in C:\inetpub\wwwroot\ABCSystem\PDFCreator.cs:line 103
InnerException: java.lang.UnsatisfiedLinkError
    HResult=-2146233088
    Message=Exception of type 'java.lang.UnsatisfiedLinkError' was thrown.
    Source=vjslib
    StackTrace:
        at
java.lang.ExceptionInInitializerError.checkAndThrowException(Throwable thrown)
        at com.lowagie.text.pdf.PdfWriter..cctor()
   InnerException:

实际代码：

System.TypeInitializationException occurred
HResult=-2146233036
Message=The type initializer for '' threw an exception.
Source=iTextdotNET
TypeName=com.lowagie.text.pdf.PdfWriter
StackTrace:
    at com.lowagie.text.pdf.PdfWriter.getInstance(Document document, Stream os) <------------- this is where the code stopped
    at ABCSystem.PDFCreator.Create() in C:\inetpub\wwwroot\ABCSystem\PDFCreator.cs:line 103
InnerException: java.lang.UnsatisfiedLinkError
    HResult=-2146233088
    Message=Exception of type 'java.lang.UnsatisfiedLinkError' was thrown.
    Source=vjslib
    StackTrace:
        at java.lang.ExceptionInInitializerError.checkAndThrowException(Throwable thrown)
        at com.lowagie.text.pdf.PdfWriter..cctor()
    InnerException:

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