Hello, I'm using the following script: https://alistairengine.wordpress.com/2015/07/18/critical-hit/ Everything is working normally fine, except for when I use a recovery skill in the skill menu outside of battle. I receive the following message: This happens when I use a recovery skill with a damage formula (i.e., see image) However, if I set the skill to have the effect (not using damage formula, ie HP Recover 500) to heal an specific amount of HP, it appears to work fine, but not what I intend. Other skills, including this one, with a damage formula work fine in battle, just get this error outside of battle. I've tried using the script in a new project by itself and get the same error using a new game under the same circumstances. It is strange as I understand these NoMethodError/undefined method appear to be for skills that may be in an old save or something, but this isn't the case. Skill was there in new game. Any ideas or help? Thank you.