I seem to have difficulty getting a movie to play properly if I mix panos and stills

The slideshow movie is ok 

i want to have tutorial stills before every pano     I want to vary the playtime and interval     anyone else have this problem

yes i have

can you run a test on your system with any say , two panos and two stills and see if the movie created and exported works in say windows media player

then go to view preferences scene   customised elapsed times

with pano and stills at , say 12secs and a 3 secs delay

then see if the movie exports and plays correctly

Thanks for your interest and help