Here are some things I've discovered experimenting with my Humax embedded Cam and the xxxx_Leo file. (the 0111_Leo file is still available at http://www.satfiles.nip.net within the Jan 16 directory).
With a complete 15 provider file, the TPS channels only encrypted in Viaccess will work, but will stop working if I change to a channel on a different transponder- after which I have to replace the card to clear them again. Those simulcrypted in Seca (such as Cinestar, Mezzo), will not work- usually cutting out after a few seconds.
If, though, I take SRG off the file, all the TPS channels work almost as normal. This is interesting, as a file with only SRG and TPS (and no others) works normally as well.
If I then put SRG back on the file in the space for Issuer (ie provider 0- so SRG does not show up in the provider list when viewing the card details on the receiver), the Viaccess only channels work as normal, but the simulcrypted ones usually now only work if I replace the card each time I change transponder. Even more strangely, this ploy stops working if BBC Prime is on the card as well, even though this channel has no negative effect if SRG is off the card completely.
It would be interesting to know if anyone else can reproduce these results, or come up with other successful combinations, and also if anyone who actually understands these files could come up with an explanation; there seems to be some relationship between TPS and SRG at least which is more than coincidental.
Incidentally, none of the above works on my embedded Nokia Cam, although the TPS/SRG only card does work.