Computer errors in a Florida health insurance program has officials contacting families of thousands of children who may have been improperly dropped over the last five months to try to get them enrolled again. Child advocates and officials with Florida Healthy Kids Corp. said a change in the state's computer system for KidCare caused glitches in which notices were sent out late, or not at all, to families that premiums were due or that their insurance was up for renewal. In other cases, letters were not properly sent out informing parents that more documents were needed to continue their coverage.