DL Tool for Dynamic Lighting

Hi all I have been having lots of fun since upgrading my account and took advice to add Keith's DL Tool, which is awesome BTW.  I swear it was working if I selected PCs earlier, but right now it only works on NPC tokens.  If I try a PC the sandbox crashes and I get this I am making the assumption it is DL Tool since everything seems OK until I run it on a PC.  I have cleared cache, shut down Firefox and restarted Windows just in case that might help.  I have also disabled extensions ( Stylus only). Any help appreciated Many thanks EDIT: same with Chrome EDIT2: Curiously, deleted PC tokens and dragged them back on to VTT, now it works for two of them but still crashes sandbox for the others.  I can't see what is different between the tokens, nor does it make sense to me for the behaviour to change with a delete and drag back.  I sense more chocolate coming on

Hi Simon! I see your issue, but can't test at the moment. My internet is out, and I don't really want to try running Roll20 on a cellular connection. If you can pin down some specific repro steps in the meantime, that would be a big help.

Hiya Keith I tried deleting and using transmogrifier to pull them back in from their original game, no joy. I opened the offending sheets, duplicated them, deleted the old ones (except one that I renamed Old so I had it for reference) and then renamed the duplicates, removing "Copy of...".  Made sure token was set up correctly in Represents and Name and they all work perfectly well now.  No clue, visually the setup on each was the same when doing a side-by-side. If that helps at all then I can go to bed a happy chap Thanks for your help, the work you champions do is amazing and crucial to this platform