Looks like you're currently at low risk of Acid Wear.
However, changing modern diets are comprised of more and
moreacidic foods such as fizzy drinks, fruit juice, tea,
wine,vinegar-based salad dressing, and fresh fruits.
To keep yourself protected from the risk of Acid Wear in
thefuture, you could use Pronamel
DailyProtection toothpaste as your regular
umbraco was unable to parse a macro
tag, which means that parts of this content might be
Best solution is to rollback to a previous version by right
clicking the node in the tree and then try to insert the macro
Please report this to your system administrator as well - this
error has been logged.