//revising the topic//
I now know that the tftp server is working fine. I need to know if the gfxboot.cfg needs to be changed in some way in order for the new distro to be booted.
//original post//
I have a working pxe server on my router that takes care of dns and dhcp and also points my clients to my desktop server to boot the os of choice. I have siduction as an option and is being done via nbd-server. I have another distro as a second option and it is being served via nfs-kernel-server and tftp-hpa. However at the boot menu on the clients I'm continually getting error message about not being able to find the kernel. I've checked the paths listed and I know the client is in the correct place, I've checked file permissions on the location on the server and it has read access. I'm lost as to what else could be causing this though.
Which Distro / Live-CD ?
If the path is ok but the kernel-file can´t be found please take a look at the rights for the new distro-path (NFS/TFTP) and compare this with the rights for the siduction path.
... and have a look at your /etc/exports and restart dnsamsq / nfs-kernel-server.
the new distro has more generous rights to the files then the siduction one does. the /etc/exports should be correct for the directory and i've restarted all the servers and still the pxe boot menu can't find the kernel
have managed to get this fixed so will mark the post closed/solved for now