error messages not letting me open the game

[MasterCrapper]

When ever I Try to open the game the error message "error in assignid, item-subgroup with name group 'plates-ore' does not exist.'' If any one knows how to fix this can you please tell me ive tryed deleting local content and redown loading the game and the error message still comes up. If its any consolation i have the steam downloaded version and i just down loaded some mods it also stops loading at 10% after all the mods are downloaded. Any help is needed so i can get back to playing this wonderful game. Also i am on windows;

[daniel34]

You have a mod installed that messes with your game, just go to %appdata%\Factorio\mods (enter that in any Windows explorer window or the dialog you get when you press Win+R) and delete the mod. If you're not sure which mod it is then delete all of them.

See also: [PSA] Fix game crashing because of mods