@<anybody else who might be testing>: can we please have at least one more confirmation that the patch is effective. After that, I will add to mantis, create the branch in Git, and merge to master so this will be fixed in MP 1.3b.
Looks like you've got a different issue going on there that is preventing you from even hitting the issue described here - more like the issue described -->here<--. A workaround that should enable you to test this fix would be to pick a channel and delete all except one tuning detail. Then after a TV Server restart it should be possible to tune that channel.