'Menu does not exist' error is not about that. I don't know what is going on for now. SHeep, please, your menu again,

2 SheepDog
Open TC favorites config and press OK.See readme.txt:Notes
2roentgen666
it works OK at your place ?
2Horst
You don't use Shift ENter in open box, since you are in open box and TC will not be called (the side effect is that new tab is created anyway, I didn't want to fix that since it is pointless to use shift enter with dialog active)
2all
Here I have menu reported with the same error as shipdogs but it works fine here... Maybe I uploaded something different. I will check it out.
PLEASE READ README.txt - NOTES