Everything's working pretty much perfectly except for the analog side of the 4400 -- it either reports no video/audio or (once) came up with a plain green screen. At this stage I'm wondering if it's something to do with the weird DIN expander cable as I'm pretty sure the signal going into it is fine.
EPG Collector worked first time on both the DVB-T and DVB-S sides, what a nice bit of software.