First year issue with video and show

[pucksterdave21]

Im new.  Built 5 sequences with video to match.  Upgraded software to advanced software to play video full screen.  

Things going good until i start building a show.    First the video show starts video comes up full for 1 second then goes to a small window.   But thats not the biggest issue. First video plays fine then the next tries to start flashes up then stops the whole show.  Waching the status it keep comes up in a loop of each sequence in the show as error playing media file.  Constant until i terminate the show. 

Each sequence plays fine as the first item in the show but going to the next one the error comes up.

please help