1) + 2) There was a bug in 2 late September versions which was sometimes causing crashes during diplomacy - typically in situations like your deal with Ethiopia. But it is strange that you are still getting similar crashes with the newest version. Are 100% positive you are running the latest version of CBP? (I for one have accidentaly misclicked and run an installer of a previous version myself) The latest version includes the changed tourism mechanics - e.g. you get a tourism notification when a Great Person is born or when you complete a quest for a city state - can you confirm you are getting these toursim notifications? I have played quite a bit with the newest version, but got no crashes whatsoever.
If you are sure you have the latest version, you can upload logs here. This is how you enable logging:
http://forums.civfanatics.com/showthread.php?t=487482
Oh, and are you playing with any other mods?
i have been using the Community Patch Project Full (EUI Version) downloaded from this page http://forums.civfanatics.com/showthread.php?t=528034. i also haven't been using any other mods, i do have some mods downloaded but not activated though.
also im not getting any tourism pop ups when a great person spawns so that might be it. where would i download the correct version?