Help with error: "Finder got an error: Can't get file"

Hi all,
In the following script I’m trying to read a comma-delimited file (a list of file names) and move those files from one folder to another. When I get down to the line “move …” the script errors out with "Finder got an error: can’t get file ‘path:to:filename.eps’ " … what’s wrong with this picture …?

set fileContents to read (choose file with prompt "Choose a comma-delimited text file")
set theText to result
set AppleScript's text item delimiters to ","
set theTextItems to text items of theText
set AppleScript's text item delimiters to {""}
tell application "Finder"
	set theSourceFolder to (choose folder with prompt "Choose source folder") as string
	set theDestination to (choose folder with prompt "Choose destination folder")
	repeat with theEPSName in theTextItems
		set theEPSFile to theSourceFolder & theEPSName
		move file theEPSFile to folder theDestination
	end repeat
end tell

Thanks, Alison

Ok, it works when I test it on the desktop, but not when I use it on the files I’m targeting (on a volume mounted from the server). Hmmm…