Hi. All. Belay that last post. I discovered what the problem was. Not enough knowledge on my part and the Chinese strike again! When installing the file to the computer, even though I followed their instructions to the letter, Mach 3 opens wiith some settings incorrect. I discovered in the Alt 6 page that the X co=ord had a stupidly high value. Y and Z were zero, so I changed X to zero and guess what ? It all came together and the above problem magically disappeared. I can finally cut something. Hopefully as I learn more things will get easier. For anyone interested the machine I bought seems to run very well indeed and appears to be solidly constructed. If your considering a Shark you should look at this one .Half the price of a Shark here in Australia and meatier build with a proper spindle. Regards to all......Ronnie