…
Maybe this will help.
set new_folder_names to {"Folder 1", "Folder 2", "Folder 3"}
set target_folder to path to desktop as Unicode text
tell application "Finder"
repeat with name_ in new_folder_names
try
alias (target_folder & name_)
display dialog "A folder named '" & name_ & "' exists in the target folder."
on error
make new folder at folder target_folder with properties {name:name_}
end try
end repeat
end tell
– Rob