Hi Hui,
Thanks for your prompt response. Maybe I wasn't clear, but for some reason even the excel pie charts changed into weird symbols in the excel sheet, but I was hoping this wouldn't happen to ppt. I had used paste special, will use insert object next time.
But I am not sure how to get the in cell pie chart font back, I have downloaded the pie4map script from the link a few times, but I still don't have the pie charts, infact if I download the file again, it doesn't contain pie charts either, but has the weird symbols