2
i had a problem like that not too long ago , what i did was i went into my FTP , located the flie that it said had a error and replaced it with the one thats on my harddrive , it worked after i done that , not saying it's going to work for sure if u do it , but u cant lose anything by it ,
just remember to click update system after u get your site back
well thats what i did to fix mine