Interact with target sometimes fails

[Catamer]

I have a melee group I'm playing with. I used the generic ISBoxer wizard setup which tends to do the FTL for you.
It all worked fine until I got to Zul'Farak at apx level 45.

Now interact with target doesn't seem to be working, I can't tell if they aren't getting a target ( FTL isn't working ) or if it's because Interact with target+CTM is failing.

it works most of the time but sometimes it just gives out and stops working all together.
very frustrating if your in an instance and you team won't attack anymore.

when I switch screens the error says "the target is too far away" but in the process of switching screens the target seems to be cleared.