如标题，用上传器上传就会出现错误，
检视错误之后显示以下讯息:
Upload failed.
* Error type: An error occurred while trying to upload the file: The file
could not be transfered to server.
* Internal info: Error getting root node: DLL could not be loaded:
System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
请问我该怎么做？用网页上传实在是速度太慢了，可是上传器又无法上传orz