I found the problems, and how it can be remedied until the next hotfix can be released
1. there's a "use" action in the Vehicle section, but Actionmapper only expects it in the Player section. Remove the following from the Vehicle section:
<action name="use" onPress="1" onRelease="1">
<key name="xi_x"/>
</action>
2. I didn't put in the actions for the alternate Fire group # and fire current group, designated by "XI_Fire_Group#". If you manually remove these from the actionmaps it should be ok after that, since you really only need the non-XI versions even when using the Xbox controller.
<action name="XI_Fire_Group3" onPress="1">
<key name="3"/>
<key name="xi_shoulderr"/>
</action>