Help "MFEMFEM" replaces some words when uploaded!

I have a perfect site on my pc

then i upload it and when its live on the internet it has replaced random words with MFEMFEM

e.g "hi my name is chris MFEMFEM and i live here at MFEMFEM"??!!

the site depends on reading .txt files... is it Binary ASCII or Auto i should have selected when uploading? It is set to Binary by default?!