Uncaught DOM Exception: A mutation operation was attempten on a database that did not allow mutations
There seems to be an issue where we write to the database while a transaction is still in progress. I've only ever seen this issue in firefox. Here's a stackoverflow link to a related discussion: https://stackoverflow.com/questions/7301064/error-a-mutation-operation-was-attempted-on-a-database-that-did-not-allow-mutat