"Revive not found" respawnTemplates[]

[president obama 10]

I'm currently on the apex preview branch and have a very simple mission which simply has:

respawn = 3;
respawnDelay = 10;
respawnTemplates[] = {"Revive", "MenuPosition"};
respawnOnStart = -1;

but every time a unit gets wounded it pops up with "Revive not found" or unable to find "Revive", something along those lines. Just wondering if anyone has that issue in the current version, or whether it's because I'm on the preview branch.