She claimed to have been kidnapped by the man.
The actor was found guilty for an incident in 2017.
He molested the victim twice.
He has 50 entries in his criminal records.
A customer claimed that a masseuse became cold after he said he didn't want a sexual massage.
He was sentenced to 10 years' jail and nine strokes of the cane.
The judge rejected the prosecution's application for a joint trial.
Former followers also say he charged exorbitant amounts for rituals and coerced them into compliance using their personal information.
Police cracked the cold case when Lau was caught reoffending by an estate cleaner.
The new accusation brings the former Singapore Idol judge's total number of charges to 7.