Hi,
Please bear with me - I'm a mum who stopped "fast" learning ages ago but my just 8 yr old doesn't yet know enough about Mods etc. to be allowed to download on MY computer. We had the same error message after I installed some mods - I saw your answer above and have now updated to .804 from .789 but now what do I do? It isn't loading within the launcher - it is still the old version. I am sure there is a very simple solution but, really, my computer hey-day was Win 3.11 !! Please, please, be patient with me and tell me what I need to do next.
Many thanks.