I'm running out of steam if that doesn't work... I'm now convincing myself that it's an openelec issue.
Going back on that thread, then... via this post: http://openelec.tv/forum/81-dvb-c-support/64897-duoflex-c-t2-recognized-as-s2
1. You're using Ultraman's media_build version, yes? or the pre-Gotham version, anyway...
Ref: http://mirror1.openelec.tv/tbs/3.2.4/
Ref: https://www.dropbox.com/sh/8eckh0dsguue506/8MinxEP2Fn
you could revert to the XBMC Frodo 12.3 version to see if that works.
2. You've enabled the media_build oddities? I'm assuming that's necessary as it was in previous versions... ssh in and
touch /storage/.config/enable-drivers-media_build.txt
Ref: http://openelec.tv/forum/83-dvb-s-s2-support/65107-images-for-tbs-media-build-s2-liplianin-dvbsky#77261
I can see that there's a dedicated media_build version that's separate from the TBS version... this may be enabled already, but it's worth checking
If either of these work, then it's a driver compatibility issue in the default OE build. Whether that will continue or not into the official 4.0 release, we'll have to see - there's been a long-standing issue with TBS cards, for example.
It may be that you end up with two choices:
1. Run your tuner on a separate server of some kind, to break the dependency on OE, or
2. Buy a different tuner that has better native support
... but let's see.
EDIT
If enable-drivers-media_build.txt is enabled, you should be able to see it in your Configfiles share. If it's not there, you can create it from there instead of ssh if you like.
EDIT 2
Don't forget to restart/reboot if you do have to/try creating this file. Obviously you'll have to do the same if you downgrade to 3.2.4 from pre-4.0.