I don't know anything about the error that tickles you but 7.21.0 is the most new SED (!) version that I know. If you run/ compile your script the updated/ your current engine gets used (7.80.1). Everything is fine. Always open WED -> About WED to know which update you are using.
"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual
