John,

Thank you very much for your reply.

The presentation was already saved as a pptm file, and the security settings set according.

I tried running the new code and it worked first time. I've been testing it for the last hour on and off and all seems well so thank you very much.

There didn't seem to be too many changes, and always trying to learn could you explain briefly what you changed please and why?

Regarding the SldRng, I don't fully understand. There are 93 slides in total, should this reflect that number?

Thanks again for your help, much appreciated.

Lee