Dear Yogeshwarsing, I have tested your ps file and I can open. I have just trouble with page 46 (slide 22) and page 50 (slide 24-) because I don't have the files flux.avi and whirl.avi that should be localized in subdirectory figures/.... I take two other avi files and renamed them flux.avi and whirl.avi, put them in a subdirectory figures and then I can open your complete ps file with GS9.05 (option Safer off) and convert it to pdf. Bets regards, Patrice