Yeah,it must be about the program.I used Animation Shop 3 to make these gifs,so it can open them without any problem.
Kenta,if you're using Windows XP(Normal,home,professional)it can be the reason too.I was using ME before it crashed,now it's XP Professional and it ends with Celebi and Starmie scene for me too.I'll get Animation shop 3 on Monday,means tomorrow,then it'll probably be able to show it till the Misty and Kenta scene.
And,I'll tell you about a program that is the best(IMO) one for viewing pics.It's not famous and you probably haven't heard of it.
It's PICA VIEW!It comes with ACDSee I believe.When you install the program,just right click on the picture,and there will be a review of the picture in the window opened when you clicked.Normal click on the review,and it'll open full size,or if the pic's too big,fitted to window.It can play gifs,it's a very good program.I have it's CD,I'm plannin' to install it today.