State senators are demanding a timeline to resolve problems with Maryland's prepaid college trust. Participants in the Maryland 529 plan said they're having trouble accessing their accounts and paying tuition. Members of a joint Senate committee on Tuesday demanded answers as to what happened, why it happened and what's being done to ensure it doesn't happen again. Maryland 529 Prepaid College Savings Trust account holders wore red to the hearing, saying it's because they are seeing red. As many as 3,100 accounts had been impacted, but that number is down to 500.