Just loaded the latest available version of TV Engine - same as yours 15769 - The DB has been updated with one extra column in the program table - parentalRating.The import is broken with the latest tv server (15769) and 0.2.3RC2+svn15770. I think that the DB has been updated.
It displays "(some errors)" next to the download button while downloading and then crashes on exit. There is no data in the EPG although the logos work fine.
I have just tried it on the new version of MP with brisbane data - no problems.Yes I reset the grid many times. I even reinstalled the program about 3 times rebooting in between.
I did a complete reinstall of MP for 0.2.3 RC2. Uninstalled everything, deleted the db removed the folders and started from scratch.
I got "(some errors)" every time I tried. I'll try it again tonight just to make sure I didn't screw something up.