Thanks for the fast response I was stuck at physical therapy when I saw you had updated. I tested and poked around a bit again, it's not creating the ftlstring now. Here's a little bit of information on what's happening.

If I have all the toons listed but don't check any of them in the "Use selected Toon in FTL" I get the following output:
JambaFTL: FTL-String is:
JambaFTL: Update recieved
JambaFTL: Updating JambaFTLAssist-Button with:/assist
JambaFTL: Updating JambaFTLFollow-Button with:/follow
JambaFTL: Updating JambaFTLTarget-Button with:/target

Which is exactly what I would expect, however when I check the box to use a selected toon, any or all of them, I get nothing at all...and ftlstring variable is set to "".

Follow is working using /jamba-follow master
However, if i try to use /click on assist, follow or target buttons created the do nothing because they are blank.

I tried deleting the savedvariables for all of jamba and just re-adding everyone and I was again thwarted by the wizardry happening in the background. Hopefully, something jumps out at you and helps. Thanks again for your incredibly fast response, paid people at my phone company take longer to get back to me with issues.