Since the change to the compilied help version (EAGraph.chm), EAGE versions (including the latest 1.0.3 version) all attempt to load the old help file (EAGraph.hlp). As I use the same directory for all the versions, I still had the old file there - so it loaded that. I have since deleted the file, however the program still refuses to load the help file.
I don't know whether it is the program at fault, or just my computer...because I find it difficult to believe that nobody else has tried the new help file!