Those aren't ISBoxer messages and I've never seen those particular messages, but I agree with everyone else that they look like Jamba messages.

I don't know what you'd be doing with Focus unless you have Jamba configured to set the Focus when Master changes. Which for the Five Shaman set, you don't have it set to update the Jamba Master at all. You can change the "Do this mapped key" per Slot in that set, right now they're all set to "Follow" in the Control key map, you should always use one that includes JambaMaster if you're using Jamba (and even if you're not using Jamba, it doesn't hurt -- which is why it is enabled by default).

Is one of the "certain characters" which the others will not assist, in slot 5 in the shamans? That one has right ctrl and right alt selected for FTL modifiers, and if you have an AltGr key I don't think either of those will work.

Without more specific information about what's happening and when, all I can do is guess, so here it is