Full logs attached. Hope this will produce some help/advice.
Edit: Should have made it clear that this relates to posts 137 and 138 above.
See this: https://forum.team-mediaportal.com/...-subtitle-engine-does-not-work-anymore-74148/
if not helping install Haali.
Sorry not to have responded earlier - been away/busy. Simply installing Haali solved the problem. All videos now playing properly. Many thanks for the advice