KDC not sending A Reply to AS Request

[Chaitra Shankar]

Hi All,
    In our project we are using MIT kerberos KDC server and small 
variations are done to the code of the clients directory to suit our 
project requirements. As per the requirements we are supposed to use 
PKINIT. How to configure the KDC server to accept PKINIT Request?
Also the KDC is not reponding to the AS Request sent to it. The Request 
is conformant to the specifications of Kerberos.
The log files show an entry which is ,as follows:
krb5kdc:ASN.1 structure is missing a required field - while despatching(udp)
Please help us. We are not able to figure out where the problem might be 
occuring.
Regards
Chaitra