I tried to load the mod in the most recent Forge version at that time, and the error message: This mod is meant for forge 22.214.171.124 and you have 126.96.36.199 popped up (Not exact of course).
MCreator issue tracker has been migrated to GitHub.
Existing tickets have been migrated to GitHub. Please open new tickets on the GitHub tracker instead. If you do not have a GitHub account, all feature requests and bug reports from forums are still considered and checked by the maintainers.