I'm not sure where exactly to ask this since I'm pretty sure it's an error that comes from EZhero- but most of my characters have blank energy cost boxes instead purple filled ones during the game. I think it comes from using EZhero on taskmaster's hero files but I'm not sure, if it is how do I fix this and if not, what am I doing that's causing this bug?
It's tough to be sure with just that description. Are you running FFvT3R with FFX? If so, this thread (http://freedomreborn.net/forums/index.php?topic=50797.msg692083#msg692083) may be of interest.
EZHero may also allow you to set the powers' EP costs to something other than None, Low, Medium, and High. That is, it may be letting you also use the extra EP Cost levels available in the first game, but those (at least the ones between None and Low) might round down to zero bars in the in-game display. I think they would still play fine, though.