Try this.
(if (findfile "X:\\logo.jpg")
(if (findfile "X:\\A\\A0001\\Logos\\logo.jpg")
(prompt "\n File already exists, cannot copy.")
(vl-file-copy "X:\\logo.jpg" "X:\\A\\A0001\\Logos\\logo.jpg")
)
(prompt "\n Original file does not exist, cannot copy.")
)