KoH + Arn the movie = Arn the book
After having seen "Arn - The Knight Templar" at the cinema I can conclude that:
Cronology:
98-99-00 > Famous Swedish author Jan Guillou writes the Arn books, they become very popular.
2000~2003 > Some Holywood dude reads the arn Books, writes the script to "Arn-the movie", but kills the lover at home, places Arns home in France, changes Arns name to Balian, changes the crusader monk to the crusader father, mixes and adapts the events in the holy land and ads the siege of Jerusalem.
2005 > Kingdom of Heaven is released.
06-07 > Swedish screenwriters have seen KoH and realize that if they do a "Arn-the movie" straight from the book it will be almost an exact copy of KoH. So they change almost everything that Arn was suppose to do in the holy land.
2007 > Arn - The Knight Templar is released.
...
They should have invested half of the budget money to buy the rights to KoH and just paste large chunks of it into Arn - The Knight Templar. Then they should have given 1/4 of the movies budget to Orlando Bloom and have him play Arn in the Swedish half of the movie. The remaining money would be the normal budget of a Swedish movie, so it would be no problem shooting Orlando killing Danes in Trollhättan ("Trollywood").