DA update broke long running server

Just did a update to a long running DA server which is 32 bit and after I have apache running but a broken control panel

[root@server custombuild]# service directadmin start
Starting DirectAdmin: /bin/bash: /usr/local/directadmin/directadmin: /lib64/ld-linux-x86-64.so.2: bad ELF interpreter: No such file or directory
[FAILED]

[root@server custombuild]# uname -m
i686

Have we got a problem with the update server as clearly its looking for a 64 bit server
on an i686 server, more to the point I need to get it running again urgently

Thanks