• LogicError is related to problems which require code refactoring to be fixed.

• RuntimeError is related to problems that are relted to data or conditions that happen only at run-time

BT::Tree  tree;
try{
	factory.registerBehaviorTreeFromFile("/home/user/test.xml");
	tree = factory.createTree("maintree", maintree_bb);
} catch (BT::RuntimeError &error) {
	printf("behavior tree RuntimeError: %s", error.what() );
	return false;
} catch (BT::LogicError &error) {
	printf("behavior tree LogicError: %s", error.what() );
	return false;
}
catch (...) {
	printf("create behavior tree failed, check it out");
	return false;
}