Downloaded latest v18 on Sunday night. Watching videos is very buggy. Most of the time, I click watch and it crashes. Music seems fine. I have default settings. However, when I watch movies on MC17, I have no issues. Also noticed it crashes on me occasionally when I right click in Theater Mode. Last, some of movies are not pulling in the correct metadata even though I can see it in iTunes, like Actors, Year, etc. MC17 worked likd a charm out of the box, having a lot of issues with MC18. Glad I did not upgrade yet and am doing the trial period and still have my full MC17 to go back to. Any thoughts? Otherwise, will wait for a more stable build in a few months as more releases come out. Too soon from its beta I guess.