I first reported this on the update 28.44 update thread but it was ignored. Hopefully I'll get a response here. At that time I had just upgraded from jr27 to 28.44. My TV recordings will not delete. I just updated to 28.49 and the same things occurs.
On a fresh reboot and start of media center, in Theater View I can go right to the listing of pre-recorded TV shows select it...scroll to delete then I get a list of options including cancel, delete from library, delete file, etc. HOWEVER, after watching just 20 seconds or so of a video....if I select a show file, select delete...no list of options appear and the "Highlighted" portion goes back to the show title in the list. I must reboot in order to be able to delete. But after watcjing a show I can o longer delete.