Chaps, chaps,chaps,
Humble pie time for me, stupid basic error on my part: the script said:
<img src="/test1.png" align="middle" style="width: 485px;
height:auto;
max-height: 100%;
max-width: 53%;
display:block">
And my file was named: Test1.png (note the capital T instead of a lower case t)
Needless to say I can now get a picture in my dashboard. Thanks for all your time and effort, and once again really sorry