Thanks John,

Ultimately i needed more assistance to get things running again. Its a bit of a blur now as it was a few days ago and there have been other problems with this machine regarding the Mojave update that have overshadowed the auto cad LT 2017  problem. But i was able to speak with a autodesk representative who walked me through the various steps, as on my own i couldn't make it happen. I remember we had to manually create a file, just a word doc with some very simple code on it, and place this in one of the folders to get things to work. But yes, seems ok now.