I am going to guess you are using it with a new character like I did. The option for health does not work until after you reach level two when defeating knuckledragger (The first "Boss" )I notice there were other options that mentioned something about level 2 in the readme for the trainer as well...must be something to do with how they coded that first part of the game, that would be my guess. It will work fine after that, at least it does for me.
yeah me too. Hopefully it's a not an issue. I just added a few skill points, added some money, some badass points and tech cash. I didn't add levels. When i closed it got that error. I restarted the game without the trainer on, as what I did is all the cheats I need. Hopefully adding just 10 skillpoints, but keeping my level at 8 is okay.