Adobe Illustrator Save Artboards as EPS Path Problem

Help. I’ve gotten rusty at Apple Script and can’t solve the following problem.

I was writing a batch script to save a specific artboard from an Illustrator file as an .eps. All’s good except something with the path name. The script below will save the artboard eps from the first file in the source folder and then fail with a dialog of “Adobe Illustrator got an error: File/Folder expected.” I can’t understand why the path works the first time but not after.

set ATID to AppleScript's text item delimiters
set AppleScript's text item delimiters to {"."}

tell application "Finder"
	set source_folder to folder of the front window
	set theFiles to every file of source_folder
	set theSource to source_folder as text
end tell

repeat with i from 1 to count of theFiles
	set thisFile to item i of theFiles
	set thisName to name of thisFile
	set thisNoExtName to text item 1 of thisName
	set thePath to (theSource & thisNoExtName & ".eps") as text
	open thisFile
	tell application "Adobe Illustrator"
		tell current document
			save as eps in file thePath with options {class:EPS save options, save multiple artboards:true, artboard range:2}
		end tell
		close current document saving no
		set thePath to ""
	end tell
end repeat
set AppleScript's text item delimiters to ATID

False alarm. I’m going to sidestep Apple Script and Batch an Illustrator action to achieve the same end.