Any idea what this means, or what should I do?
It means your too old to play minecraft
>>14281737
I'm doing this for my granson, faget.
Get him to delete the mod(s) and play the game like a normal person. Simple.
your version is too new, you have version 1.8.9, and the mod supports 1.8. You need to either get the newest version of the mod, or use the tool to lower your version to 1.8.
>>14282150
Thanks a lot, had a feeling it was that