I finally got answer.

 

Remember I said...

 

  <settings tempPath="C:\Temp2\" processPages="*.aspx" ignorePages="InsertImage.aspx" uploadIDQueryField="UploadID" enableProgressBar="true" bufferSize="16384" minRequestLengthProcess="0" throwErrorsImmediately="true" logExceptions="true" serialKey=""/>

 

I edited red bold text to upload...That works! :-)