When I set my crafts using Alchemist, Architect, etc. It works fine. But when I use None with my alts, each time I log on it tells me I need to set my crafts. It seems to accept None as my option, but then when I log on the next time I get the message about setting crafts.

How do I fix this or turn off this message?

I did that and it didn't work. I did it again after reading your post and the same problem. The bot says when I login:
[Rosy]: You have no crafting information set and you are above level 40. Please use '/tell Rosy !setcraft [class1] [class2]'. Classes can be Alchemist, Architect, Armorsmith, Gemcutter, Weaponsmith and None. If you haven't picked crafting classes yet this may be the time to do it.

Is there a setting somewhere I need to change? Or some way of turning this off?

Thanks for your quick reply, btw.

in !settings there is a button to disable that spam message.