Thanks heaps Will. Strange, this gives the same error on my machine as the previous one. ! Missing $ inserted. <inserted text> $ l.74 \begin{tabular} {|l|l|}\hline ? r OK, entering \nonstopmode... ! Missing $ inserted. <inserted text> $ l.74 \begin{tabular}{|l|l|} \hline I've inserted a begin-math/end-math symbol since I think you left one out. Proceed, with fingers crossed. [1 But it works for you so probably there is something odd about it on my machine. So the problem goes back to my own TeX settings. Thanks a lot for spending your time on this. > > > >