I was trying to get ReaderKeyRecoveryTool to work. The one sentence that did not sink in was that that tool is only needed if the file is encrypted, which her files were not. All I needed to do in ConvertLit was to Downconvert the lit file which strips off DRM5 and creates a DRM1 LIT file. That is fed into Calibre which creates the ebook. So easy once one knows the steps to take.
Thank you for your comments. They got me to reexamine what I was actually doing.