At the moment, there are 2 problems...
Problem 1:
Jerusalem_GameplayData.xml
Line 96 is missing a closing >
Currently is: </Colors
Should be: </Colors>
Fixing that error I load up and get the CTD with the following error in my database.log file;
[2001708.556] [Gameplay] ERROR: UNIQUE constraint failed: Civilizations.Description
[2001708.556] [Gameplay]: While executing - 'insert into Civilizations('CivilizationType', 'Name', 'Description', 'Adjective', 'StartingCivilizationLevelType', 'RandomCityNameDepth') values (?, ?, ?, ?, ?, ?);'
[2001708.556] [Gameplay]: In XMLSerializer while inserting row into table insert into Civilizations('CivilizationType', 'Name', 'Description', 'Adjective', 'StartingCivilizationLevelType', 'RandomCityNameDepth') with values (CIVILIZATION_KINGDOM_OF_JERUSALEM, LOC_CIVILIZATION_JERUSALEM_NAME, LOC_CIVILIZATION_JERUSALEM_DESCRIPTION, LOC_CIVILIZATION_JERUSALEM_ADJECTIVE, CIVILIZATION_LEVEL_FULL_CIV, 10, ).
[2001708.556] [Gameplay]: In XMLSerializer while updating table Civilizations from file Jerusalem_GameplayData.xml.
[2001708.556] [Gameplay] ERROR: UNIQUE constraint failed: Civilizations.Description
I'm too tired to try and track this down right now, but it should give you a starting point of where to look for yourself... Taking a quick look at that line, the only thing that looks different from base is the missing Ethnicity bit... but the official DLC doesn't use it, so I'm guessing that's not critical.
So something related to the Description part is off... maybe a typo?
Anyway, if you still haven't gotten it figure out by the time I wake up, I'll take another look and see if I can't find it.