Jan Jansen magic weapon in use

I've got BWP 9.10 installed and I've noticed a strangeness with Jan that I never had a problem with in the vanilla BGII/ToB version.  Whenever I try to remove his crossbow or equip him with another weapon I get the message 'magic weapon in use' and I cannot change his weapons.  I even used ShadowKeeper to change the weapon he was equipped with to a dagger but when I loaded the game up it showed him equipped with his fist and still displayed the text 'magic weapon in use' whenever I tried to click in his equipped weapons area.

Anybody else have this problem or know how to fix it?  Jan is kind of a personal favorite of mine so it would be nice to be able to use him, but I'll have to pass on him if I can't equip him with a different weapon.

I have basic proficiency with Near Infinity if that tool could help me solve this problem somehow.

P.S. I did a Google search and a SHS search (though I'm not confident that the SHS search is working at all) on this topic but I came up empty so I'm down to starting a new topic.

Thanks in advance,

Firebringer