I've just installed an update for my Illustrator CC.
I have to re-install ALL my scripts because they ALL have gone.
Next time I'll think twice before allowing an update.
Illustrator's File > Scripts folder mechanism is archaic, but at least it should have left your old application folder with the scripts?
You can try my light-weight script panel so this won't be an issue for you again:unknown
Re: Script Panel - Work in progress
Retrieving data ...