The majority of incoming Kansas University students affected by an orientation registration error are back on track, Kristen Trendel, director of new student orientation, said Friday.

KU lost registration information for about 290 incoming freshmen who registered online.

Trendel said she thought someone accidentally hit the wrong button and deleted the information. Trendel said there was not a security breach.

KU sent messages to the affected students and more than 250 have responded.