I just tried unsuccessfully to apply a new transition to slides in Power Point.

I went to the 3D tab, selected that, went to options and selected speed as slow, then asked for the transition to be applied to all.

When I went to view slide show, it worked fine. When I saved the presentation, it asked if I wanted to save the changes, I said yes.

However when I reopen the presentation, the transitions don't work.

Anyone else seen this problem? Any suggestions as to what I may be doing wrong?