Every error message ever written in R: "Error" Hmmmmm, okay after 20 minutes of squinting at the script I see there's a lowercase letter at the header name of

Every error message ever written in R: "Error" Hmmmmm, okay after 20 minutes of squinting at the script I see there's a lowercase letter at the header name of the last column somewhere in the middle of the 200 lines...now we can move on to debugging the next "Error"...