The default behaviour of Genero Report Writer when it cannot find an Image is to stop with an error. There is a very good reason for this, if you are sending out documents with your company logo on them, if for some reason something happens to that company logo file, you do not want to send documents output with a blank space or placeholder image where that logo should be.
There are some options that allow the program to continue.
Read more at
https://4js.com/ask-reuben/ig-262/