Depending on your gameworld, various healing spells (for brain injury
or chemical imbalances), mind control spells (for purely
psych/emotional isssues--usually calling for repeated castings), or,
"Banish Demon" type spells might have the same effect as "Cure
Insanity".
Or just decide that the erratum does not apply to your campaign.
>> Stay informed about: errata says: no cure insanity?