ik, its a bit late but i found a solution.
go to the folder gamedata->save and open the system.ini. there should be a line in there called actorproperties. delete that line, save the system.ini and it should work. the actor properties opened but you could not see them because they were not in your window.
go to the folder gamedata->save and open the system.ini. there should be a line in there called actorproperties. delete that line, save the system.ini and it should work. the actor properties opened but you could not see them because they were not in your window.