replace 2012 cert "Public Certificate, Private Key and Intermediate Certificate"

rcapache2 restart with error as below:
Starting httpd2 (prefork) startproc: exit status of parent of /usr/sbin/httpd2-prefork: 1

[Fri Feb 24 19:55:19 2012] [error] SSL Library Error: 218595386 error:0D07803A:asn1 encoding routines:ASN1_ITEM_EX_D2I:nested asn1 error

Anyone know what happen?
old cert will expire in one week.
Please help.
Thanks.