Hard to say without context, but probably an edge case I didn't think of. Do you have the full log ? At what step are you getting this error ?java.lang.IndexOutOfBoundsException:Index: 139, Size: 137.
Likewise for your provinces problem, I can't really tell you how to fix it if I don't know more about what errors you're getting. I wouldn't worry about dejure stuff until provinces are ok, but there is no easy way to do this.
Localisation files are not needed, shouldn't be a problem. If you can't see counties it's probably the same problem as wanna_grenade : bad image format on provinces.bmp.