See, I told you it would be something simple.

Thanks Mr Muskrat!

I have been staring at the various parts of the code for this application since 7:30am and I think I needed a break. As soon as I saw your comment I realised what I had done.

Thanks also for the warning about $^W++ - I am not sure where I picked that one up, but I will go have a look at the documentation. I have changed this script to use -w on the shebang line.

...john