Version b39 - export issue

I build a short video, i.e. about one minute, including as snippets a title one, two times a 3 vertical and once a double vertical. Once the slideshow complete, including audio, using the root Version 4.5 as earlier highlighted because version 5 doesn’t allow me to insert audio, I than tested the export functionality, i.e. export mini-iPad version HD 1080p. At each test, multiple onces, I was confronted with a message from iTunes indicating that the .mv4 file had been corrupted and was not usable. Although the file was readable by Quick Time Player but included one corrupt slide in relation to one of the 3 vertical snippet used, but only for one not for the other one. I’m sending you ,Bastian, screenshots of the corrupted slide.