Where as i have been working happily on Goole Cloud . It appear that running latex (on laptop A) to produce a pdf can break something and store some information some where so that even starting from scratch with a new specification - not on the cloud - will not work and throw errors such as that attached. But if i open up my other laptop (laptop B) it works fine with the cloud data. So the problem is not with the data. Also I can switch things around and get specifications that work on laptop A but fail on laptop B. So it does not appear to be the laptops. At this point the only solution I can find is to avoid using the cloud which is a shame as it was working just fine.
kind regards david
