On 14/05/2009, at 3:44 PM, Vafa Khalighi wrote: > Strange, this gives the same error on my machine as the previous one. I just copied the example I sent into a new file and it seems fine to me. > 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. The only thing I can think of is that you've modified your local copy of array.sty. Otherwise there shouldn't be any problem. Will