{NEOWEBSCRIPT ERROR: syntax error in expression "1740627080 - "}

syntax error in expression "1740627080 - "
    while executing
"expr [clock seconds] - $lasttouched"
    ("foreach" body line 5)
    invoked from within
"foreach filename $filelist {
	set f [access_data_file $filename -project cart_last_touched]
	gets $f lasttouched
	close $f
	if { [expr [clock seco..."
    invoked from within
"$safeInterp eval $ssiCode"

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