Can't move units

[Hector42]

Hi, in certain scenario's in a couple of different games (Punic Wars + RCW), i can't give some units orders or their info box with all the extra info doesn't display.
For example in RCW Pharsalus1_48BC.scn playing Pompey -  if I try to give the Cretan archers an order by clicking on their box, nothing happens. I can give some other units orders, notably the Ptolomatic cavalry and Asiatic archers. 
Testing it on a few more games of the series, it's basically if there are allies on one side. I can move one force but not the other. Also, a message appears at the bottom saying insufficient action points but in the unit info box, it lists action points available when I try to move the unit with the shortcut key.
Any ideas please?

I've not played for ages but as I recall if you have several different nationalities, you can only move one nationality at a time, then advance, and do another.

That does it thanks!