The text of the log4d.props file should be:
Download the sample log4d.props file:
The DLL will now log to a file called c:\illiad\dll\ILLiadDLL.log. This can be edited to another name or location. If you have multiple web folders (shared server or using test web), you can make a different log4d.props file in each web folder that points to another file name for that log. You may need to change the permissions on the c:\illiad\dll directory (to allow the Internet Guest Account (IUSR_ILLIAD or similar) to create and write to a file. That file may not allow you to open it while the dll is still running. You may need to stop and restart the web server to open the file.