Hi Guru
Thanks for that. It will be interesting to hear from anyone (or even someone from L6 directly) whether it is the case that the POD can only be a Master and not Slave. To be honest, I'd suspect it is not the case because once I set the POD to Match SPDIF everything works perfectly. So the issue is not so much whether it can work in that set up, but rather why it comes up with message each time I turn it on.
Aside form that, I have the EMU connected to a Lavry DA10, and that can only be a Slave, so the EMU really does need to be master.
As for cables, I do need to get something proper. But what I'm using at the moment is working fine. I'm cheating a little by using BNC cables with phono style adapters at each end. It's Neutrik and Van Damme so good quality, but I think it would better not to use adapters in the long run. But for this problem I'm having, I don't think the cable plays a part.
Thanks for the reply.