gangmug

SO I have downloaded MTA SA today and when I try to join it said "san andreas DATA files have been modded" then I backup of the original DATA and replaced it then I tried it again it worked fine but I tried it again it said the same thing and I haven't modded anything. Then I copied the original data again it still says that, iv also downloaded data from this site still does not work any help? I can only connect to one server