When entering custom fields I often receive java.lang.NullPointerException errors especially if I choose to associate the field with request types. I can ignore the error and continue normally, but any changes I make to the system (or at least to custom fields) from that point forward only last until I logout. This occurs every time I attempt to associate the field with a request type. However, if I opt not to associate the field with a request type, it still occurs with about every third or forth field created.
Any advice on how to correct this error would be appreciated.