Notwithstanding any other provision of this chapter, an action against the trustee of an express trust, whether in contract, tort or otherwise, arising from any act or omission of the trustee constituting a breach of duty shall be commenced within six years from the date the act or omission is discovered or in the exercise of reasonable diligence should have been discovered. However, no such action shall be commenced more than 10 years from the date of the act or omission complained of, or two years from the termination of any fiduciary account established under the trust, whichever date is later. [1991 c.968 § 4]